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Old Sep 10, 2016 | 12:39 PM
  #1  
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Default engine misses

engines misses at idle (most of the time) and in driving speed rang (lesser).
. spark plugs are checked and are ok
. wires are checked and are ok
. emissions systems checked and ok
. fuel filter changed
. vacuum leaks checked and ok
. idle speed and mixture are ok
. distributor cap is not cracked, distributor components cleaned

One thing I did not find and have no idea what his purpose is. From de distributor a cable goes to a sort of filter which is bolted on the engine. One of the wires is lose. Can this be the problem and what is the purpose of this element. (see pictures)
It is the grey element in the middle of the picture.
Can you help or direct me to a possible existing thread. I've looked a lot but dit not find any answer.

txs
Storm



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Old Sep 10, 2016 | 12:52 PM
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Originally Posted by eole
One thing I did not find and have no idea what his purpose is. From de distributor a cable goes to a sort of filter which is bolted on the engine. One of the wires is lose. Can this be the problem and what is the purpose of this element. (see pictures)
It is the grey element in the middle of the picture.
Can you help or direct me to a possible existing thread. I've looked a lot but dit not find any answer.

txs
Storm



This is a Capacitor noise filter for the radio. Wont effect a miss.

Your engine miss if everything you have checked is ok ( not sure how you checked/tested each item) but you might have a lean / rich condition with the carb. (AFR) a long with improper timing causing a miss.

Other things to look at is measure and map out your mechanical / vacuum advance curves to see if they are similar to factory.

eg. mechanical advance start RPM- then total advance degrees @ RPM.

do the same for vacuum advance @ what HG max advance and how much it retards timing @ low vacuum.
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Old Sep 10, 2016 | 01:46 PM
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Can you isolate the miss by pulling plug wires until the engine runs the same with no effect?


Once you do that you will know lots- spark plug, wire, valves...etc
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Old Sep 10, 2016 | 10:48 PM
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Originally Posted by billschroeder5842
Can you isolate the miss by pulling plug wires until the engine runs the same with no effect?


Once you do that you will know lots- spark plug, wire, valves...etc
Start with this one.
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Old Sep 12, 2016 | 09:16 PM
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A burned Valve ? A compression or leak down test will tell You a lot about the condition of the Engine.
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Old Sep 13, 2016 | 12:11 PM
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Default garage

I ve done all the steps here under.
Nothing shows up.

Will look for a mechanic to ask to solve my problem.
Thanks guys for the help. I appreciated it a lot.

erwin
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