To much gas!!! Car wont start!

[Tim 76' 280Z]

Ok the picture that I have attached is what my plugs looked like when I pulled them. They were more wet then dry. They were new like 6 months ago. My car is getting way to much fuel I believe. Due to this the car will not start, seems to be flooded.

What could be causing so much fuel to be dumped into the motor???

76 280z

Edited November 12, 2008 by Tim 76' 280Z

[1oldmotorguy]

If I were to venture a guess, leaking cold start valve, if yours is stock fuel injection, or possibly leaking or stuck injectors. If it has been converted to a carbureted system, check the float bowl for a stuck float/needle valve, and check fuel pressure. In addition, a potential on a FI system is a clogged return line (which tends to boost pressure beyond spec even with a working pressure regulator) or a failed pressure regulator. Vacuum leaks will also cause the vehicle to run poorly (if at all) due to overrich mixture. The largest source for vacuum leaks I've found is the boot going from the AFM to the Throttle body, the boot going from the air filter to the AFM (less critical) and the various tubes coming off the manifold. The carbon canister can have leaks, as can the vacuum accumulator on the passenger side wheel well in the engine compartment. (california model). In some cases the cali model will run extra rich from a failing altitude sensor, but this is different from your problem. Mainly, check to see if your fuel pressure stays up (eliminates leaking cold start valve and injectors), check to see if the thermo-time switch is within spec, check to make sure there are no holes in the AFM to throttle body boot. Compression tests are also a good idea, as you appear to also have some oil fouling. http://www.gnttype.org/techarea/engine/plugs.html It takes quite a while to replace all the vacuum tubes in these cars. I highly recommend going through the FSM if your car had a previous owner that was into tinkering with things. The FSM download is well worth it. It's saved this newbie's butt numerous times. http://www.xenons30.com/reference.html has it available for download. (I note a laptop computer helps a great deal when working in the car, or a printout). Heh... laptop. Old portable computer i had was an amber CRT, with a 5.25 floppy drive, and a keyboard that folded up over the monitor. *grins wryly* Not quite as old as the car, but getting close. Still tracking down issues in my Z, wish you the best of luck.

[Tim 76' 280Z]

I believe the problem is a blown head gasket. The passengers side of the block is wet with what appers to be oil. This would make since... there is water in there thats not allowing the motor to fire or run right. I got her to where she will run now but she runs like crap. I have changed most of the sensors and conectors in the thermostat housing. So thats not the problem. I dont know for sure but one thing I do know is I want her fixed so I can drive her!

[Kiwi ZX+Zed]

any spark at plugs

[Tim 76' 280Z]

Yes there is and see will run but its bad.