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Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144025 07/23/08 3:11 am
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Steve in Tulsa Offline
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I just got my 79 running after cr**ing out last Sunday. Dead in the garage. I mean DEAD.
It was the Rita Amp. I also rewired the connectors under the tank and a few others and it roared to life.
I was about to post this - did on the R&T site - about my amp. Then John beat me to the wiring.
Hope this solves it for you.


Steve in Tulsa
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Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144026 07/23/08 11:31 am
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sawtooth Offline OP
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Two things tick me off about this..

one is the simple fact that this guy..who professed to have experience with wiring...( not to mention his job as computer hardware tech) could make such a mess out this..what a POS

the second is that i missed it...i didn't want to dig into the main loom since it looked untouched...once agin..it just proves to take the time..do it right and leave no stone unturned..

if it wasn't for johns casual notation on the subject..i wouldn't have gone looking

now, as far as this being the source of the problem:
i don't think its the source but definitely a contributing factor...all the tests that i ran showed that i was getting strong and regular spark...but this may help explain some of the inconsistancy i have been experiencing..

i am going to say this now to break the jinx..once i get this running right...with my luck..the engine will blow

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144027 07/26/08 5:12 pm
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Junior Offline
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Kind of quiet here?
How`s the turd doing?
Don`t tell me you gave up?
Let`s finish the exocism,kick the devil out of those MKIIs.....
laughing JR....

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144028 07/26/08 10:09 pm
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sawtooth Offline OP
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Actually, I found more wiring issues...so i was delayed.

The good news I managed to get all buttoned up today and test the latest carb modifications.

First the carbs ingredient list

Both carbs: 3.5 Slides, #15 Pilot Jets, .105 drilled .038 needle jets, 2c3 needles (set to center notch), Top hats remove.

Left carb: starter/choke jet = blanking plug.

Right carb: starter/choke jet - #25 jet

The results were unexpected. It took several kicks before the turd finally decided to fire. I gave the turd gas and nothing. Finally, I used a screwdriver to open up the choke on the right side and it finally fired.

The left carb immediately started pssing gas from BOTH tubes. Pssing ...not a lil a lot! Gas was also seeping out the bowl gasket

There was so much gas that I can't be sure but I belive the right carb was also pssing gas from the overflow tube...

I wasn't too happy with condition of the seats ...however, on the bench the needles were seating.

I have a couple of shells of buckshot!!

Mr.t

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144029 07/26/08 10:21 pm
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Peter Jones Offline
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Stick with it - it'll be well worth it.

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144030 07/26/08 10:51 pm
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Steve in Tulsa Offline
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I've had all I can stands, I can't stands no
more!! mad
Put the f***** carbs, and the parts, in a box and send them to me.
( or maybe to John? laughing )


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144031 07/27/08 1:45 am
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sawtooth Offline OP
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I am thinking that sending the carbs on a road trip might be the best solution...you and John will have to fight it out. Most of the parts are Johns but if i recall (steve) has the open exhaust

I am going to give the turd another try tomorrow...I tapped on the bowls (with butt end of my over and under) so may it might of done something...i doubt it

My guess..its the seats..they looked like sht

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144032 07/27/08 6:47 am
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I'll stump up for the stamps s/t!

Blapper redwine

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144033 07/27/08 6:35 pm
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sawtooth Offline OP
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well before we get to carried away:

i went out this a.m. and fired the bike...same condition...pssing gas for the left carb and seepage from both bowl gaskets (left & right)

i know the left bowl gaseket to be kind of finicky ...so decided to double check and make sure it was not interfering with the float operation...back togther it went and no change

i went back and checked the float level.... 060"-080" but i thought..what the heck raise it a hair and voila no more pssing!

did the same to the right and no more seepage

i am willing to admit human error...but unless my eyes deceive me...the float were set correct...maybe turd carbs just need a slightly lower float levels

in the process of tweaking the float levels..i compared the left and right seats...and the left seat has noticeable large hole...i don't know what this means (other than another part which needs to be replaced : (

once that problem was solved..

i fired the bike and checked the timing..timing checked out

the bike idles high (3,000 RPM) and there appears to be some backfiring and gas vapor spitting back from the carbs...small amount when i flicked the throttle...

i started the pilot air screws at 1.5 turns out on each side...the left carb runs smoothest at .5 turns out from seat and the right appears to be good at 1.5...however these were only initial results and i think i should run it a lil more and adjust further

i still havn't ruled out FedEx

Mt.T


and

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144034 07/27/08 7:13 pm
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Steve in Tulsa Offline
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Quote
i am willing to admit human error...but unless my eyes deceive me...the float were set correct...maybe turd carbs just need a slightly lower float levels
I have found with the MKIIs it's easy to set too high. The float hits the body and never shuts off the valve.
Sounds like you may need to flatten the bowl surface as well down the road. Sand paper taped on a table saw and then gently flatten the bowls. But the float level may cure this.
Also sounds like a clogged idle circut on the left. Or the slide is high enough to be catching
two circuts at once - maybe - ? It's a thought.
You're almost there.
We'll have it fixed in less than 300 posts!! laughing

Good man, Blap!! He can't afford the postage after all the parts! laughing


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144035 07/27/08 8:16 pm
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sawtooth Offline OP
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I can't afford sht!!

I am off from work this week!

Told the wife I was hittin the road with AMAL MKII's for the promise land (Middleboro MA)

she pouted and said.."without me?" and then smarten up and said "with what money!"...

I suggested that I take "Nessy" (emerald green Sprint 900)..same response...so much for that adventure

I wish there was some place closer that was sympathetic to the cause...with both parts and experience

Tulsa Steve...what about going up another pilot jet?? I am not ruling out blocked...but in this test I have gone to the low side of the extreme for the pilot jet (ie #15) would it be prudent to try a #20?

ST

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144036 07/27/08 8:37 pm
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Steve in Tulsa Offline
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My concern is not prudency. Like I said, they will idle with 15,20 or 25s.
My concern is imbalance. Why is one adjusting so much differently than the other? IMHO they should be closer than they are. Check your e-mail.


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144037 07/29/08 9:26 pm
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sawtooth Offline OP
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update: the turd is still fighting me every step of the way...test rides...each day and each test ride yields a plertha of new and exciting challenges (who am i kidding the f'in thing is a pain in balls...excuse my colorful ****ogy)

with johns guidance...i have gone from rich to lean...a positive step (currently running #15 pilot, .105/.035 needle jet, 2c3 needles - center clip, 3.5 slides)

but..my bowls continue to seep gas (a few taps with the mallet appears to help that condition...only to have it return later) i have not found the cause for sticking floats...(only the obvious..the seats are shot and the needles must not be seating perfectly...)

on the plus side..with steves help...i have the pipes secured enough to continue testing

but as mentioned at the beginning of this post..each day is something new and different...i installed baffles...but in return the turd thanked me by exposing a leak in the rocker cover gasket (exhaust)...so not only do i have seeping gas...i now have oil spewing out....all nuts and bolts were tight/snug..my guess is ol'turd didn't like the reverse wave of the baffles and in the process exposed another weakness

it hasn't won yet

mr. t

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144038 07/30/08 10:57 am
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Peter Jones Offline
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Have you tried asking it nicely ? laughing


If your exhaust valves are a bit slack in the guides, the inlets may be too - this won't help carburation. Hope it's not this, but bear it in mind.

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144039 07/30/08 3:05 pm
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Steve in Tulsa Offline
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The bowl is on the way. You should have it in a few days.


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144040 07/30/08 4:46 pm
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Ditto Steve...
found a pair in an old racing box.
j


Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144041 07/30/08 5:41 pm
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Steve in Tulsa Offline
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John - hang on to them I may need them. I had only the one bowl for two spare bodies. Check e-mail.


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144042 08/01/08 12:04 am
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sawtooth Offline OP
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after removing the rocker box...i found the following

http://i36.tinypic.com/2pocj0n.jpg

what you see there is the a crack in the top of the left exhaust valves..i assume that these might be the orginal valves

which means new valves and new guides (i managed to scavenge new valves locally...but only one guide..the current guides were sloppy with the new valves)..and of course everything gets to go to the machine shop

and since the head was off...here are shots of the piston heads and all their disgust (if someone sees something else..wrong..just send scotch..maybe ignornace is bliss)

http://i38.tinypic.com/2r6crdk.jpg

left piston
http://i34.tinypic.com/2zgvkgj.jpg

right psiton
http://i33.tinypic.com/fnwodl.jpg

dogs
http://i33.tinypic.com/1zfk582.jpg

(henry in the background, vera in the foreground, shy wife off stage)

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144043 08/01/08 12:26 am
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Steve in Tulsa Offline
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Oh my... frown


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144044 08/01/08 12:47 am
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Sawtooth,

The only comments I would make are;

a) your dogs have no pupils.

b) The 2 clean spots on the pistons appear to suggest incomplete combustion but I don't know much more than that. Dry sooty black is fuel, Wet sticky black is oil is that right?

c) Valves and guides would be a great start.


'51 C11 in a '54 C10L frame. Back on the road...
'70 Triumph Trophy 500. Next on the bench for a refresh!
'72 Triumph Tiger 650. Back on the road...
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144045 08/01/08 2:44 am
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doggone, this is interesting. I have a 79 "special" and always used ngk b8es, before the bike sat in the barn for 15 years, but now it fouls the plugs within 30 miles. Using b6es or n5 now, and very little missing. I should add that I need rings, oil consumptions is excessive. The funny thing is that oil consumption was bad before I parked it, and I always used b8es or n3, hmmm.

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144046 08/01/08 9:47 am
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Peter Jones Offline
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Seeing as the head is off anyway....


Might as well have the ports worked on a little. (they shouldn't need much, just cleaning the casting marks, smoothing etc.)

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144047 08/01/08 7:46 pm
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Steve in Tulsa Offline
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Actually I was thinking incomplete combustion EXCEPT
where the hot spots are. Are we seeing clean areas corresponding to plug position?
* The rings and pistons are fairly new,
* the compression is good - 145+ both sides -
* the carbon buildup has been VERY fast
* a valve stem is cracked.
I want the oil drained and filtered. I want to see if there's metal in it.
I know the head is being done. I know one guide/valve was bad.
I am thinking rings not seated yet. Don't forget to hone the bores before reassembly to break the glaze.
----
Saw, I'll get those washers to you Sat or Mon. I may not have the thick ones but I have the AN washers that work. I use them.


Steve in Tulsa
Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144048 08/01/08 8:02 pm
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sawtooth Offline OP
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i am taking break for a remainder of the weekend...

Re: 1979 T140E - Amal MKII - Plug Fouling TURD #144049 08/02/08 12:56 am
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Steve in Tulsa Offline
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I looked again at the pictures. Not related to the plug position. It wraps around the intake side of the piston. Very interesting. Spark tracking?


Steve in Tulsa
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