Close
QUESTIONS

RepairPal is your advocate for car care advice and guidance

Q: change my intake manifold and now my truck does start? on 1990 GMC 2500 Pickup

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
change my intake manifold and now my truck does start, it just struggling to start. is it my timing?how do you fix that?
No car image 94a1663db56199c5353592009e34aaa51078a2469bed068bb8d6f0ba43accf97
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
| |
Double check that you have correctly reconnected all the vacuum hoses and electrical connections. After that get a friend to crank over the car and with a squirt can with engine oil in it squirt oil around the intake manifold to cylinder head surface see if the oil gets sucked in at any point which would indicate the intake manifold gasket has some how got pinched or installed wrong causing a lean condition.
Likely yes, it is your timing. You need to put the distributor back into *exactly* the same gear tooth from which it came. If you don't, you're either going to have rough idle or no start at all.

If you bungled that procedure (i.e., you didn't match-mark the distributor body to the intake manifold) there's no way you can adjust the distributor location to make up for the mistake (which of course you could do by rotating the distributor body in an older car). Instead, you'll need to reset the distributor by getting the engine at #1 TDC and placing the distributor in per GMC's recommendations.
Didn't find what you were looking for?