misfire
 

I have a 65 chevy c20 and I have a misfire any suggestions on what I should look for? or where to start.

Re: misfire
 

need more info

Re: misfire
 

Like said, and is it an inline 6 or V8? What type of misfire? Is it popping....or just a slight poof, or really bad popping? We need more info cause it could range from ignition to compression, or valves springs or valves...so if you can post a video that would be cool also! We will do the best we can to help! Lotta great people on here!:chevy:

Re: misfire
 

V8 327

Re: misfire
 

if its at idle it's great. but as soon as I give it gas it has a loud pop.

Re: misfire
 

Probably a backfire through the carb...might be running it to lean. try adjusting the idle mixture on the carb and see what happens.

Re: misfire
 

how do I post a picture?

Re: misfire
 

When you post a reply go to the "Manage attachments" option and you can post a picture.

Re: misfire
 

video sorry

Re: misfire
 

You have to post it on youtube.....then transfer the link to here.

Re: misfire
 

Has any work been done recently?

Are the #5 and #7 plug wires too close/touching?

Re: misfire
 

I recently put new points on

Re: misfire
 

Bingo.....your a man of few words......how did you set the points

Re: misfire
 

I removed the distributor cap. took off the old points since they had been burnt. placed the new ones on and gave them a gap of a match box.

Re: misfire
 

this morning I checked the spark plugs and cleaned them out. I started the truck and noticed that some gas had been leaking from the bottom of the carb. after I turned the truck on it turned white.

Re: misfire
 

Usually a leak from the carb will cause a vacuum leak, causing stuttering, hesitation, or stumbling. :chevy:

Re: misfire
 

but that would not cause the misfire then

Re: misfire
 

No, it shouldn't. Causes of misfires are bad plugs, even the spark plug wires can cause a misfire if the covering is stripped or worn in places, sticky valves, weak valve springs, burnt points(usually it won't even start), a flat cam could be a possibility, did you check your compression? Burnt valves or worn valves will cause a misfire or constant popping. You can check if you have issues with the head by compression; if all is even then you might have weak springs or ignition issues, if your compression is much lower in some cylinders then you have valve issues or piston ring issues.:chevy:

Re: misfire
 

Your loud pop could be a lack of timing.
What's your initial timing set at?

Re: misfire
 

cool all this info will help

Re: misfire
 

Could also be a problem with the brain of the engine.
Wore out lobe on the cam shaft.

Re: misfire
 

All good info but after you basically rebuild your motor from all that 'info' then we'll still need to know 'What's your initial timing set at??

Re: misfire
 

I would also go back and set your points properly....gap...dwell...then timing and carb adjustment

Re: misfire
 

I will be setting the timing and will adjust the points on Monday will keep you updated with what's going on.

Re: misfire
 

set points first, point dwell affects timing, timing doesn't affect dwell.