1984 GL 4WD 49 State, with Weber carb.

Bah!  Trying to find the cause of a problem which comes and goes. 

'been pleased with the Weber carb, starts right up usually.

Yesterday, I had a crank but no-start condition.  Choke in right position, correct fuel pressure to carb.  50 degree day.  Removed dist cap, wd-40'd and thoroughly  dried it.  

I attempted to start several times, and I did not get even a "pop".   Also, with starting fluid, choke open, then  choke closed, no start, no detonation. 

I let the car sit for a couple of hours, then came back to it to do diagnostics.  I removed #1 spark plug wire, to check spark on disembodied spark plug.  The car started right up with gusto on 3 cylinders. 

What is the most likely cause of intermittent spark problem?  Anecdotal information wanted!  It's all I have to go on.  

Perhaps it is flooding? fuel+moisture+ fog... plug gap, timing,corroded coil wire, what all happened before, ie change anything electrical? Starter alternator cap rotor plug wires, is shooting gas in the carb before starting? Floats could be stuck...

Edited December 3, 20187 yr by Len Dawg

Could be an intermittent fuel problem.  When the fuel pump starts to go out they run intermittently.  You can crank all day and it won't start.  Next time you try it'll turn over.

When the problem happens again, try rapping on the pump with a screwdriver handle.  If it gets you going you found the problem.  May take more than one try.

 

EA81 distributor modules tend to give warning signs before leaving you right in it

Dizzy ignition module or a lot of shaft play that’s not allowing the module to detect the trigger wheel or the points to open sufficiently as required. 

All the best with it.

Cheers 

Bennie

Thank you!

I am carrying in the car a spare distributor module. 

 

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Len Dawg

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Posted 17 hours ago (edited)

Perhaps it is flooding? fuel+moisture+ fog... plug gap, timing,corroded coil wire, what all happened before, ie change anything electrical? Starter alternator cap rotor plug wires, is shooting gas in the carb before starting? Floats could be stuck...

I did not change anything in the past couple of weeks!   

mkoch

Edited December 5, 20187 yr by mkoch
I meant "not"

Be aware that if the module or spark dies completely and won’t intermittently run it means you have a dead coil AND and dead module. 

DO NOT replace the module without replacing the coil first. A dead coil will instantly kill a new module. Ask me how I know...

Cheers 

Bennie