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1.2 misfire
I’m having big issues with misfire on my 1.6 8V on twin 40s.
timing all good,carbs all good,fitted new coil/plugs/leads/roter and cap and still misfire.
i have ordered an ignition control module that’s in the dizzy to try next.
im starting to wonder if I have a bad earth? Where are the earth points because I can’t see one from the engine to body or gearbox to body.
compression at 190 on all 4 cylinders so all good on that.
purchased a second hand distributor but car wouldn’t even start with that on 🤦🏻*♂️.
please help
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Sorry forgot to mention the car was a 1.2 carb so using that ignition set up
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I dont think it would be earth related what pump are you running. ,
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Right what did you set the timing at.?
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If you give it the beans/even to 7 grand it’s fine so I’m pretty sure it’s not a fuel issue
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Strange pal. So its low down the misfire starts? Does it miss on idle?
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Cam is set to 105 degrees,crank 10.
Had it rolling roaded and it pulled like a train,had a slight miss low end but it’s getting worse and worse,sat cruising is horrendous.Even checked head gasket all ok
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Yeah misses on idle but not badly,Rev it up to 3 to 3 1/2 it goes
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That was my next question head gasket..
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Iv played with the timing advancing and retarding makes no difference on misfire just power delivery
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It’s only done 150 mile since head gasket was changed
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What fuel are you using? Are you using the 1.6 dizzy or 1.2?
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Super unleaded fuel and 1.2 dizzy set up
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I was using unleaded but had pinking no matter what I did with timing,changed to super unleaded and pinking stopped
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I've heard the 1.4sr dizzy set up is the one to use with 40s. Dont know how true that is.
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Yeah iv used that set up before but used this set up years ago on another one with no issues
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Right maybe something internal then could be the issue..
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I can’t see it’s that because I have good compression,cylinder head was flowed/new valves seals and guides/skimmed,all work carried out by reputable company,I have no air leaks on intake manifold
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Hopefully ignition module will make a difference
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Hope so pal. Sounds like you have a good engine to start with. Hopefully something minor.
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She pulled 135bhp on the rollers,Dave Bogg who rolling roaded it commented on how well it pulled for a 1.6 8v
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That's good power bet it goes well.
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It does once it’s past the misfire ;-)
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Are you using the black screw on dizzy with the advance retard diaphragm?