Ok, I've been posting threads for some time now about my truck. I finally found the problem. A faulty fuel pressure regulator was causing a good amount of fuel to flow through the vacumn line and back into the manifold. From there, the liquid gasoline found it's way into the cylinder. I believe that my no-start condition was due to actually flooding out the cylinder.

To fix this I replaced the pressure regulator and pulled the plugs in an attempt to make the excess fuel evaporate. I also checked the oil to see how much gas I had in it. I COULD NOT BELIEVE WHAT I FOUND. I had nearly 7 quarts of gasoline in my oil pan. I drained the oil and there was so much gas in it that the viscosity of the oil seemed to be almost 0. I put new oil, filter, and some oil additive in and cranked the engine to try to lubricate the pistons and get some of the excess gas out. When I cranked the engine, it didn't sound right at all. It was much higher pitched and just sounded really strange. Now I'm scared that I seized up the engine. It hasn't been running for about 10 days now, and when it was running, the temp gauge was reading normal. However, since the truck hasn't been running, I've been out there continuously cranking the engine to try and diagnose the problem.

I haven't put the plugs back in to try and start it, because I want to let it sit for a few days and let the gas evaporate out of the cylinder. I was thinking that maybe it sounded strange because I had all the spark plugs pulled out. What do you guys think??? Is my engine toast or not???

 

well if it was seized it wouldnt turn over but i wouldnt be suprised it the piston wall were scared or bearings were in bad shape

 

how can I tell if it's cranking. It sounds really funny, but I don't know if I just hear the starter, or if I can hear the engine actually turning over. Remember, I don't have plugs in, so I won't hear any explosions

 

Sorry for the stupid question but how did the gas find it's way into your oil?

 

I had that happen 4 years ago. I put in new oil then changed it the next day. I have put 75,000 miles on it sense then.I don't think it hurts the motor (to much) because it is not running. Good Luck.

 

Montana, Look at your fan when turning the key. If it turns the engine is cranking.

 

The last line in your post states you "have not" put the plugs back in and hear this sound when cranking the engine over?

If you are cranking the engine without the plugs, You will hear a higher piched sound and the starter will sound and be turning faster.

 

That's what it sounds like to me. I checked the oil when I changed it and I didn't see any metal shavings so I think I might be alright. It I truly did 'flood' the cylinders with the excess gas from the regulator, what is the best way to get it out. I have all the plugs pulled in the hopes that most of it will evaporate. Is there anything else I should try?

 

With the plugs out and cranking it over several times ahould remove most of the fuel.

 

High speed is due to no plugs, hence no compression.

If the crankcase flooded with gas, change the oil and turn the engine over with no plugs while watching oil pressure gauge. Remember that the rings are lubricated with oil splash and you need to ensure that enough fresh oil moves through the galleys and crank bearings to splash some oil in the bottom of the cylinders. Plugs removed will give slightly more speed to the crank to sling oil through the block. You definately don't have to wait for days for the fuel to evaporate. I wouldrun the motor for about twenty minutes then change the oil again, but it is not necessary. Fuel has a vapor point of 30 degrees. Running the engine to operating temp. will evaporate fuel and burn it through the PCV.