....HELP--Cylinders & Oil pan full of GAS

[chris311L]

I am now on my third set of plugs and two oil changes......Why? I do not know. I just replaced my CPI unit & nut kit. Why would my cylinders fill full of gas and foul the plugs???:mad:

I have pulled the plugs, changed the oil, and flushed the gas from the cylinders twice now....and I let it sit for a few days so that any gas left would evaporate. Plus the gas is going straight to the oil???? Could the new CPI unit be bad????:mad: I bought it from Advance Auto Parts.

It will not fire after replacing the plugs and oil. It turns over until the cylinders fill with gas. And then it stops! :mad:

I give up! Is there anyone here that can help me with this problem before I set the truck on fire? :jump2_125

[jjwalker]

Dude, your CPI is leaking BAD. Are you 100% sure you replaced the unit correctly?

[Sparky2263]

Sounds like the injector ground wire to the ecm may be grounded. Ck. it and see.

[chris311L]

Sounds like the injector ground wire to the ecm may be grounded. Ck. it and see.

Where would the ground wire to the ecm???? Thanks for the suggestion! csl

[Sparky2263]

The injector wire has a pink wire (12V supply) and a blue wire (ECM ground, injector control). Disconnect the connector and insert a test lamp in place of the injector. If it lights when you turn the key on, the injector circuit is permanently grounded and allowing the injector to flow at all times.

The cause would most likely be a fried ecm but could be simply a grounded control wire somewhere between the injector and ecm.

A fuel pressure gauge will come in very handy when diagnosing fuel system problems.

[rlith]

The other issue here that no one had mention is that the cylinder walls are washing...(Not a good thing at all) as well as the crank bearings are getting a beating from the gas as well. You keep going like that and you're gonna lose your engine.

[jjwalker]

Yeah, quit trying to crank that thing until you are positive the problem is solved.

In case you do not know, washing is when the gas "washes" the oil off the cylinder wall. Of course I am sure you DO know that, that is VERY bad!

[chris311L]

Thanks for all of the responses! Question: What type of lubricant can I use to get into the cylinders during the spark plug change? What will be the best way to get the lube into the cylinders since some of the plug holes are hard to reach? I plan to pull the upper manifold off once more just to check the gas lines (nut kit). I am thinking the cpi unit is stuck on wide open mode! Does anyone think Advance Auto Parts will buy provide a new engine if their product caused a possibly engine failure ??

[Sparky2263]

What part did they supply?

[chris311L]

What part did they supply?

The CPI unit. I am on my 3rd one currently. The nut kit came from the GM dealership.

[T Man]

Unless they did the work, there is a good chance they wont replace it on their dime.

[rlith]

Unless you could prove it was infact the CPI unit that caused the damage, you're gonna be out of luck. In order to prove it you will have to have the engine torn down and inspected by 2 independant places.

[dt4ts3]

Does the Distrubutor have anything to do with firing the injector? I've heard yes and I've heard no. I have heard that the pick up coil sends a signal to the ecm. Y'all know more than me though. Our pick up cpil wires are Bare, all the insulation has cracked and broken off.

[torskdoc]

Indirectly it does. The ecm needs to know WHEN to fire the injector and distributor timing will accomplish this. If the Pickup coil wires are bare with no insulation there is a good chance the coil is shorted causing the ecm to go WTF and causing the flood condition by keeping the injectors open all the time.

Replace he pickup coil, and double check all connections to and from the distributor for opens and shorts. Also make sure that all wiring around the UPPER Manifold is clear of all edges that can crimp and possibly short the spider or other electrical items.

Larry

[shipper]

That happened to me once when I was still ignorant. I wired an electric fuel pump to a manual switch. BAD IDEA. It WILL kill your rings, it WILL scorch your cylinder walls; and in my case, it killed the crank. Expensive lesson. Don't try to fire it again until you are absolutely positive you have the leak corrected. Imagine what would happen if all that raw fuel would light up. Hope you like harp music.

[dt4ts3]

I'm guessing they'll say it was the installers fault. Could be wrong, maybe they'll honor it. Napa replaced all the clutch components in my 95 because the shop didn't tighten the bell housing all the way.

[T Man]

Does the Distrubutor have anything to do with firing the injector? I've heard yes and I've heard no. I have heard that the pick up coil sends a signal to the ecm. Y'all know more than me though. Our pick up cpil wires are Bare, all the insulation has cracked and broken off.

No, injector timing is based off the Crank Position Sensor