Nash
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| posted on 7/3/10 at 06:49 PM |
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Still not right
I have now set the timing and replaced the HT leads. The car is still not firing on No.3 cylinder. The plugs were new 20 miles ago and were running
fine.
Any suggestions as to what else to check?
1300 x-flow, A3 cam, +90 pistons. Std Dizzy set up.
........Neil
It's What You Do Next That Counts.
Build It, Buy It, Drive It:
Southern Kit Car Club
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Paul (Notts)
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| posted on 7/3/10 at 06:52 PM |
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New Dizzy Cap / rotor arm ?
dont know much about Fords but this helped on my Rover V8 when using dizzy.
Paul
edit
is the inlet valve opening on No 3
[Edited on 7/3/10 by Paul (Notts)]
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tomblyth
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| posted on 7/3/10 at 06:57 PM |
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are the new plugs iridium? as these dont take kindly to being wet/fould. Use ordanary pulgs until mixtures are right.
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rusty nuts
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| posted on 7/3/10 at 07:24 PM |
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Swap no 3 spark plug with one from a cylinder that is working, if no change then check compressions, valve clearances , distibutor cap etc. Also worth
squirting WD40 onto the inlet manifold/carb with the engine running, any increase in idle speed would show up an air leak
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r1_pete
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| posted on 7/3/10 at 07:38 PM |
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Check for wear in the distributor bearings, much more than a hint of sideways movement is too much.
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russbost
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| posted on 7/3/10 at 08:06 PM |
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Air leak on inlet manifold at no.3 cyl. \\check with a rubber tube in your ear!
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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GaryM
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| posted on 7/3/10 at 08:10 PM |
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Neil, has it ever fired properly on Cylinder 3 since you've had it or is this something that has started happening in the last 20 miles?
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steve m
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| posted on 7/3/10 at 08:39 PM |
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Perhaps a compression check is in order ?
as perhaps there is a problem with no3
is the valve clearance correct,
push rods straight, and seated correctly
do both rockers move when the engine is running ?
regards
steve
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austin man
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| posted on 7/3/10 at 09:39 PM |
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Sticking valve or incorect clearances leaving valve open ??
Difficult really without knowing what youve done
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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Nash
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| posted on 7/3/10 at 10:53 PM |
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In answer to sme of the questions:
Engine was running fine throughout the rev range. I had it ticking over while checking engine and hose temperatures after I put a new Thermostat in.
Car was upto temp and running smoothly. It then cut out for no apparent reason.
I checked the plugs it is running rich but cleaned them up and put them back.
I was getting a belt off the HT leads as soon as I touched them when taking them off, so I changed them in cse they were breaking down.
I set the timing up to 6 Degrees BTDC.
I gapped points to 27 thou.
I did find a screw had come out of the Vaccum Advance bracket so put that back before sorting the timing etc.
I will move the plugs around tomorrow night to see if the problem moves and after that its Rocker off and valve clearences I guess.
The car starts and ticks over no problem but is lumpy as soon as you apply revs.
I will report back. Let me know if anything else springs to mind.
.........Neil
It's What You Do Next That Counts.
Build It, Buy It, Drive It:
Southern Kit Car Club
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