Car Flooded wont fire

[1996Eclipse420a]

I know they're are other threads but I'd like a better understanding. My Eclipse has been rebuilt, once again.Just not got about 500 miles in the motor. Ball joint broke while driving, ad done some damage body wise. Fixed it drove it home, to find out the exhaust was broke almost in half above the upstream sensor. It does on my driveway, and won't fire at all. Smells like raw fuel. I bought a set of new plugs, but haven't put them in yet. I'm going to get the exhaust welded up... My question is, what caused it to flood so bad? Gas is in the oil pan. I have been having to pump the gas pedal to start to car before all this happened. Once or fired it idled like ass and sounded like a misfire. Once I started driving it though it all ran fine. The car will not start at all and when it would start before, I had to pump the gas or it would not start.

 

[jayson427]

Really hard to understand what you're saying. Sounds like a fuel pressure or fuel leak problem and if you have an exhaust leak that bad it can misfire. Now what was rebuilt?

 

[captain_kurt]

Gas in the oil pan sounds like a more serious problem than flooding the engine.

Yea what did you exactly have rebuilt?

 

[1996Eclipse420a]

I had the bottom end rebuilt. The first time I had it built, the block was bored bigger than my pistons. Some of the machine shops are crazy around here. The car ran fine but once the exhaust cracked, it quit running all together and would not fire. You can smell the car flood itself, and the plugs are toast on it. Anyhow, if a car floods bad enough it's going to leak down the cylinder walls one way or another.

The car runs fine. No oil burning or nothing like that. I highly doubt a crack exhaust will cause it to dump that much fuel, but I can tell you my o2 sensor probably isn't even getting a decent reading box it's cracked so bad. I can look at my AFPR and see if it has failed, but something is causing it not to spark, an flood itself? Possibly the coil pack?

 

[jayson427]

You can have a stuck injector too. And yes coil, wires is a definite possibility. Seems like you have bigger issues if your pistons don't have the proper ptw clearance. You should not be getting fuel in the oil. I wouldn't drive your car till that's fixed.

 

[1996Eclipse420a]

My pistons have 4 thousandths piston to wall clearance. Checked them myself when I learned how to build it. It has so few miles on it that it may not have the rings seated yet. Even If they were seated and you did nothing but flood the car, I'm sure some will eventually leak down to the pan. Idk how much is even in the pan, I just smelled the dip stick..... And I think I found the problem. Vaccuum hose on the AFPR smells like gas. I'm going to Extreme PSI to order another one. Hopefully I solvesy problems.

Also the last motor I had built didn't have the proper PTW clearance. The bottom of the bore was 4 thousandths and te top was 8 thousandths. That thing started smoking like hell . So I don't think that's the case thanks for the help though. Ill chime back in a couple days from now once I get this AFPR in and let you know if its fixed

 

[ManticSHadow]

Over flooding a cylinder allows gas to wash away the oil and drain into the pan giving the oil an obvious fuel smell, also a no start possibility due to loss of compression. I had a similar issue no start after fresh rebuild, first remove the spark plugs and let the cylinders dry out, check plugs for discoloration, replace oil, (fuel ruins the lubricating ability of the oil) then put it all back together new sparkplugs suggested if they looked bad then crank the engine with the fuel pump off so oil can reseal the rings then reconnect fuel pump and see if she starts. Give that a try. Just my experience but you obviously have a prob somewhere in the system my problem was a stuck injector.

 

[1996Eclipse420a]

I'm about 99 percent sure its the AFPR. The plugs look like crap, so I've already got a new set. I ordered another AFPR, and I'm just gonna wait till then. I think the compression is good, just the spark plugs are so bad that I think it's causing it not to start. Did yours work after replacing the bad injector? And any compression issues?

 

[jayson427]

What are you gaping your plugs too?

You should fill out your mods in your profile so in the future other members have a better idea of what you have.

 

[1996Eclipse420a]

Since mine is turbo I gapped them to .028 from what other 420a guys have told me. Ill fill it out in the morning. My laptop is in the car an it's late