Tinoco17

Okay just had a question would a ripped fuel pressure regulator keep the car from starting it just turns over and a bunch of gas comes out the throttle body and when I took off the plenum it was full of gas oh it's a 305 tpi

RBob

iTrader: (1)

Yes. Take the FPR vacuum line off of the TB and do a key-on. Watch for fuel exiting the line (be careful). If so then the FPR is bad.

If not, it can also be from the CCP system. If the vent and return lines at the tank get switched while replacing the fuel pump it will send raw fuel through the charcoal canister. Same deal for checking, remove CCP line from TB, key-on and look for fuel (be careful).

RBob.

85IROCzzz

iTrader: (1)

Fuel in the plenum is a very high indication of a ripped FPR, and to confirm this you can take the vacuum line of the FPR, turn the key forward to prime the pump without starting it and fuel will shoot out of the little vacuum port.

As for it not starting I guess it could be ripped so bad that too much fuel is getting through and flooding it. Replace the regulator first and see if it fixes it. Cheapest place I found mine was Hawks for around $47 but autozone and oreillys had it for $70. I think the savings was worth the week of shipping I had to wait for.

Tinoco17

Yeah turned out to be a ripped diagram. Thanks for the quick replies I just received the diagram today hopefully It fixes the starting problem.

Tinoco17

Okay now the car just cranks but won't start seems like it's trying to start but maybe the spark plugs are to fouled

TTOP350

iTrader: (8)

yup. you need new ones.

Tinoco17

Okay thanks guys this site is a life saver I just bought a 92 z28 for 950 trying to get it to run

RBob

iTrader: (1)

In this case also check the injectors. If they are the stock original ones they are most likely shorting out by now. In this case the engine won't run or will run badly as the ECM can't properly fire the injectors.

They need to be above 12 ohms to be OK. If you get the engine running check the resistance hot.

RBob.

Orr89RocZ

iTrader: (20)

If you had a lot of gas get into the cylinders, change your engine oil too!!

Tinoco17

Okay tried to start it with new spark plugs and just crank and pop through intake doesn't turn on the spark is very small

TTOP350

iTrader: (8)

Check the firing order

Tinoco17

Just triple checked the firing order and it's correct

Orr89RocZ

iTrader: (20)

Keep playing with timing and such at the distributor. Verify the ignition components are working. Good coil/cap/ignition module/ etc. Old stuff can be rusted or corroded.

Tinoco17

I know the cap and rotor are new and so is the coil but not to sure about the ignition module or pick up coil I have a new pick up coil sitting here so I'll just install it and see what happens.

Tinoco17

Ok the coil checked out good, I put in a new ignition control module and spark plugs, the pick up coil ohmed at 815. I tried putting starter fluid and just back fired through the intake also while cranking there's a popping sound from the intake like it wants to start but can't and if I open the throttle it back fires through the intake I checked the firing order everything seemed right maybe the catalytic converter got plugged from the leaking fpr, the lady I bought it from said it would stall at stop lights or stop signs and one day she tried to start it and it wouldnt start just cranked over

TTOP350

iTrader: (8)

Sounds like the timing is off. did you unhook the "set timing connector" thats over by the pass strut tower?

Tinoco17

Yeah still no go

Sojer

Check for vac leaks and my injectors ohmed at 16.5 87 LB9 are they bad

Tinoco17

Got it started after cutting the cat, we checked to see where the rotor was pointing at tdc and the rotor was on backwards now it starts like a charm thanks guys