Problems with s10 need help badly

[robinson52]

Ive got a '88 s10 it starts runs but dies when u give it gas or if u leave it run for a period of time. It is getting gas but wont stay runing. I have replaced the cap and rotor button,plugs,wires,coil. Im open for any suggestions. Please help! Im getting agervated with it.

[Chris Stewart]

Is the Check Engine light on?

[robinson52]

no thet check engine light is not on...i lined all the timming marks up but my distrbutor is off

[Chris Stewart]

Which motor is in it?

[robinson52]

2.8 v6

[Chris Stewart]

I believe your timing, after you set it initially, is controlled by the computer and is continually advanced until the knock sensor senses a spark knock then the computer retards the timing a bit then starts advancing it again over & over.
Have you checked the fuel pressure or maybe the fuel filter?

[robinson52]

no but it is getting alot of gas...awhile back i had problems with the fuel pump and had to replace it

[Chris Stewart]

What do you think about possible water in the fuel?

[robinson52]

that might be it i never thought bout that cause i had to replace the coil pack and when i done that it started and run good but it ran out of gas cause i had it sitting in front of my house for sale and havent put no gas in it in forever so i had to put gas in it thats when it started messing up.....any othe suggestions

[Chris Stewart]

You might take the fuel line loose from the fuel injection and place it in a jug so you don't spray fuel everywhere, turn the keyswitch on a coupla seconds then off, now check the jug to see what the fuel pump sent to the motor.

[robinson52]

ok thanx alot i will check this 2mar and post sying wat ive found out or ask more ?...lol....but thanx and check back 2mar

[robinson52]

i checked the fuel and it didnt have any water in it so i decided to run a compression test on it and on the left back of the motor the cylinder 1 and 3 held 90 pounds of pressure and cylinder 5 held o pounds. So i put a lil oil in the cylinder and it went up to 90 and stayed so im thinkin the piston rings are bad. Im so agervated over this thing im bout ready to sell it the way it sits

[wyatt_earb]

Put some 100w gear oil in it.....

[DelCoch]

Originally Posted by robinson52

. . . run a compression test on it and on the left back of the motor the cylinder 1 and 3 held 90 pounds of pressure and cylinder 5 held o pounds. So i put a lil oil in the cylinder and it went up to 90 and stayed so im thinkin the piston rings are bad. .

I would say you have stuck rings on #5 due to sitting and not being driven. I would get some Marvel Oil and pour about a 1/8 cup into #5 spark plug hole, put the spark plug back and let it soak for a week - then remove the spark plug and turn it over to blow all the Marvel Oil out, replace spark plug and see how it runs. Then do another compression check. If the compression improved significantly, but still not up to at least 50 pounds, do the whole thing again. If you still have zero compression it may have a broken ring.

Actually, 90 pounds of compression is very low, all should be around 120-150 on a good engine. How did #2-4-6 check out?

While doing the compression check did you have all the spark plugs removed and the throttle wide open, (peddle to metal).

[robinson52]

2and 4 haeld 90 pound but number 6 held 100.....yea all plugs removed and the throtel wide open but thanks for the sugestion i will try this and repost