1984 Chevy C/1 Pickup Truck Timing or Distributor Issues

i would check to see if the sparkplug wires are wired correctly wired almost sounds like the distributor might be 180 out check make sure its at top dead center on #1 plug and wire from there if you can adjust timing and make run good then runs like before check timing chain slack if real loose it could be making timing jump around but is firing while vavles are open so timing is a timing off thats for sure

jajaja im having the same problem with my 1985 chevy c-10...The timing is was off..

timing is waaaay off, check the chain if thats fine then it could be the distributor gear is dinged up

your timing is WAY off! I would imagine since its popping out the carb the timing is either to far foward or your timing chain has jumped a few teeth. Popping out of the carb a SURE sign the timing is off.

Check your points.Just a thought,hope it helps.

If you have another carburetor, stick it on there and see what happens.

timing try top dead center and do the distributor rewire it and it might be burnin rich back firin .

Try running diesel

I know i posted once before, But one more thing you might want to check i seen you had yours wires zip tied togeter well sometimes that will cause them to miss fire.

sounds like firing order or you need to reset the timing put number one top dead and reset the dist. also check to make sure your wires arent burtnt or cracked i have a 69 truck with a 383 did the same started up put give it a lil and it would pop check timing and all wires

eh......what??

Sounds like timing could be way to far advanced or wires crossed. NateDogg: yes the firing order can be off when me an my friend put a 383 in his 95 silvy, he had 5 and 7 crossed it ran and would go down the road, but it ran like S**t

i know its your muffler bearing because i had a teeruck dust like yurn its a 66 ford right if dat dusent werk try inhiberter relay it ill make em pop tu

my 87 c10 did this exact same thing. i had a bent pushrod which threw everything out of order. thats what it sounds like to me

after that take ur fuel line off (don't want the truck to start during this) and put it in a catch pan or something to that affect take ur valve covers off and let one of ur friends just tap the ignition a couple of times if some of the rockers are moving more then others you could have bent pushrods or a bad cam or some really really bad valve lash lol just go through this and see if that doesn't help

ok i have this smae truck and experienced the same eissue even though this truck doesn't have point it does use a magnetics pick up coild take the rotor bug off check ur cleareances on ur pick up also check ur vacum lines u can get a vacum gauge at ur local auto parts store also make sure that all the contacts on ur coil and magnetic pick up are clean second go through and check all ur plug wires then check the plugs after those issues are eliminated then go through and check ur valve lash.

That engine will run on only 5 cylinders. His is obviously hittin on more than tha, it's not floppin around in there like a marlin on the deck of a boat. That one's hittin' on all eight to some extend. Check for vacuum leaks or a leaking plug wire that's grounding out enough of the spark to make it run like S**t

hes firing order cant be that off if it starts and runs

either you have some wires crossed or a wiped cam

to me its out of time i have timed many trucks and cars nissan checy ford dodge and more but its 1 of a few things you timing chain has stretched and jumped time i have seen that happen or like somone said wires crossed if its wires your fireing order is 1.8.4.3.6.5.7.2 or its your disturburator

seems to be crossed wires..

i have the same year same truck...an mine does that same popping noise...if you got it fixed tell me what you did
thanks

if it were 180 out it wouldnt run at all. turn the distributor counterclockwise untill the popping goes away, if that doesnt fix it then your timing chain is stretched.

to me it sounds like the disturburator is in backwards, on a Chevy engine it can go in 2 ways, My advice is to take the disturburator out and turn the rotor button about 180 degrees and try again.

If nothing hte other guys mention have helped, you may have some wiped cam lobes with one or more valves not opening or not opening completely. That popping makes me wonder about an exhaust valve not opening.

Not sure if you solved ur problem yet but if you didn't maybe this will help. first, did you check the timing on it. from wut i saw, the popping through the carb sounds is for sure your timing. I don't remember exactly but i think if your timing is to far advanced it will pop through the carb. If it's too retarded it will back fire through the tailpipe. I'd start with the timing and see what you can come up with.