93 chevy 1500 V6

[dirtbikemaniac37]

the engine is runnning but cylinder 5 & 6 is missing.
whats the best thing to do? check valves. rings? thanks

[tempfixit]

Originally Posted by dirtbikemaniac37

the engine is runnning but cylinder 5 & 6 is missing.
whats the best thing to do? check valves. rings? thanks

When was last tune-up?
Check rotor and distributor cap and wires.
Any codes???
Do compression check.
Check intake for vaccum leak.

[dirtbikemaniac37]

i put new plugs and plug wires on it last year. and no compression at all.

[tempfixit]

Originally Posted by dirtbikemaniac37

i put new plugs and plug wires on it last year. and no compression at all.

no compression on 5 and 6 or all clyinders?

Did you do a wet compression test also? (squirting oil into clyinder to see if rings are bad)

[dirtbikemaniac37]

only 5th and 6th cyclinder is missing. and no i have not.
how do I do that test?

[tempfixit]

Originally Posted by dirtbikemaniac37

only 5th and 6th cyclinder is missing. and no i have not.
how do I do that test?

Squirt some oil thru the spark plug hole, enough to cover the rings on the piston and do compression test. If you have a increase in compression from the dry test the rings are leaking if not problem is in the valves or intake. I am more inclined to think you have a intake problem.

WHen you say 5th and 6th are you meaning the rear clyinder on the left side and rear clyinder on the right side of engine???

[dirtbikemaniac37]

okay. thanks alot

and if there is a intake leak. where would that be?
and what part would possibly need replacement?

[tempfixit]

Originally Posted by dirtbikemaniac37

okay. thanks alot

and if there is a intake leak. where would that be?
and what part would possibly need replacement?

Would you explain which clyinders you mean by 5th and 6th??

Driver side clyinders are #1,3,5 (from radiator to firewall)
Passenger side are #2,4,6 (from radiator to firewall)

[dirtbikemaniac37]

the 5th cylinder is on the driver side in the far back and the 6th is on the passenger side in the far back

[tempfixit]

Originally Posted by dirtbikemaniac37

the 5th cylinder is on the driver side in the far back and the 6th is on the passenger side in the far back

Let us know results of the wet compression test and we will help more from results.

[dirtbikemaniac37]

okay. thanks