turning, but no start

**AfterYou** · 07-19-2011, 11:55 AM

I recently bought a 1999 z28 camaro, ls1, and it was driving just fine, then intermittently starts to not...start.. It will turn over like its going to, but just never starts up.. Its getting fuel, and we already replaced the fuel filter, any suggestions?

We already tried to jump the car, and that was unsuccessful

**Knight** · 07-19-2011, 12:01 PM

What fuel pressure do you have at the fuel rail? You should see 58 psi. It could also be an issue with VATS, a pretty common problem. I'll see if I can dig up the thread on it.

**Knight** · 07-19-2011, 12:03 PM

Here's the thread on bypassing VATS - http://www.ls1.com/forums/showthread...highlight=VATS

***SMWS6TA*** · 07-19-2011, 12:38 PM

If it was VATs it wouldn't be turning over.

OP check the usual culprits.

Spark - check all wires & plugs. I doubt it that it's this but better safe then sorry.
Fuel - like Knight said, check fuel pressure @ the rail. You could not be getting enough fuel. Bad Pump. Most likely this. How was the fuel filter. Was it completely clogged? Stuff could have gone past it and caused a block down the line.
Air - check make sure you didn't suck up a plastic bag - yes it could happen , I did and car ran like shit. I couldn't believe it when I pulled the filter off. This is my reason for never de-screening the MAF.

TB- make sure it opens & closes.

**JayTA98** · 07-19-2011, 12:45 PM

I will start by checking the Fuel pressure like Knight and Scott mentioned. You can hear the pump priming but that doesn't mean is putting out good pressure. Did you just replace the fuel filter or before the problem started?

**AfterYou** · 07-19-2011, 12:48 PM

We couldn't see the fuel filter, it was enclosed.. But we also don't have a pressure gauge..

Also need to note the car has been in a garage for about 8 years.. Only started a few times during that..
The car will start over long wait times.."over night"

And we replaced it after the problem started

***SMWS6TA*** · 07-19-2011, 12:59 PM

Sounds like the fuel pump is going out. When a car sits for a long period of time the gas goes bad no matter where it is sitting at. (meaning in the tank, pump, fuel lines, fuel rails. etc....)

**AfterYou** · 07-19-2011, 01:01 PM

We bought the car nearly empty in the tank, and filled it up with fresh fuel and injector cleaner, so were guessing fuel pump.. The car has also died while driving down the road.. If we can get the car started, we are going to drive it down the road to a shop and get it looked at as well as an oil change and anything else that needs to be done

**JayTA98** · 07-19-2011, 01:04 PM

Originally Posted by SMWS6TA

Sounds like the fuel pump is going out. When a car sits for a long period of time the gas goes bad no matter where it is sitting at. (meaning in the tank, pump, fuel lines, fuel rails. etc....)

If you replaced the filter and you have bad gas it could be part of yoru problem. If there was crap at the bottom of the tank it can clog the filter again. You can rent the fuel pressure from some auto part places. If the vehicle was stored for that long and you have alot of fuel in the tank. I will suggest you to drain the tank. You can either suction the fuel out or disconnect the fuel line before the fuel filter, put a container for the fuel, remove the fuel pump realy and use a wire jumper to hot wire until is the tank is empty.

But make sure you check fuel pressure 1st.

**JayTA98** · 07-19-2011, 01:05 PM

Originally Posted by AfterYou

We bought the car nearly empty in the tank, and filled it up with fresh fuel and injector cleaner, so were guessing fuel pump.. The car has also died while driving down the road.. If we can get the car started, we are going to drive it down the road to a shop and get it looked at as well as an oil change and anything else that needs to be done

damm im behind with the updates. it does sound like a fuel pump issue.

**AfterYou** · 07-19-2011, 01:12 PM

Hopefully we can start the car and drive to the autoshop to be looked over, if not, we have to trailer with a trailer we dont have, money money money :/ we've got 3 fbodies chillin outside, all of them have turned into something we have to fix.. Although we just sold our Trans am, being picked up tomorrow morning

**Knight** · 07-19-2011, 01:12 PM

Agree. Get a guage and check your pressure at the rail.

**AfterYou** · 07-20-2011, 04:38 AM

used a rubber mallet on the gas tank this morning, it let the car turn over, and stay up long enough to bring it to a local shop!
Ill let you guys know what the problem was after we get her back