I checked my rear timing tonight and found it was as far up as it would go so i turned it down and i turned it down to see if it would help with the sputtering. The sputtering got worse. Here is the rundown on the truck. I got it a while back and it had a sputtering problem when i would push on the gas hard. I also noticed that the exhaust manifold is getting pretty hot. Just now i noticed that there was a lot of gunk underneath the distributor cap housing down by where you adjust the timing. I tried sea foam, checked the fuel filter, changed the spark plugs, and tried changing up the rear timing. Upon changing the rear timing the truck would sputter more and nearly die. I need to fix this sputtering any suggestions and help would be great!!
hooking up a simple cheapo vacuum gauge will give you the best chance of diagnosing the issue...A short list of possible problems..coil,carb, vacuum lines,manifold leaks,plugged exhaust,dist.vacuum advance or ignitor,valve adjustment...etc...5 minutes with a vacuum gauge and you can save a whole lot of guesswork and expensive parts being replaced...they're easy to use and come with instructions ...should be able to find one for under $20...and you'll wonder how you ever lived without it
Ok i got a vacuum gauge, but idk where the best place to hook it up, nor am i exactly sure where to hook it up......... help would be great
vacuum leaks are 85% of carb and idling problems, use a vacuum gauge or carb cleaner, carb cleaner will send the engine to high idle if you have a vacuum leak, make sure the vacuum port in the air cleaner canister is working properly, also check that your vacuum advance hose isn’t cracked coming off the distributor to the vacuum manifold tree. The vacuum manifold tree is brass on the bottom to go in to the block and plastic on top. Plastic wears out with time and will break or leak, which causes a vacuum leak. Some manifold vacuum trees are 3 or 4 port, make sure to replace it with a new one. When I buy parts I buy 3 at a time that way I have them on hand or in case they can’t get them any more. The vacuum manifold tree is located behind the carb. If you looking at the carb from the right side of the bed, it will be to your 1 O’clock tucked down inside. Remember to use a marker or different colored tape to mark the vacuum lines so you know where everything goes back too! Good luck!’
