USArmyZ28

iTrader: (3)

Sup guys,

Lately my 2000 WS6 has been taking a few seconds longer to start and I often have to hold the gas pedal down for it to fire up, thid problem arose from out of nowhere and I have no idea what it is. No SES light and I haven't done anything new to it since I cammed it about 12k miles ago, the car runs fine and doesn't seem to have a power loss or any other issues.

One thing I did notice was that I have been running it with the AC on and it "chops" much harder with the AC on, not sure if that's related but that's the only thing I have done differently before this problem came around. Any advice? Thanks for any help!

Joshiedoom

iTrader: (4)

Fuel pump IMO. Check the fuel pressure, change the fuel filter. Just a start

the_merv

iTrader: (88)

Fuel Pump or Filter. Check the Pressure.

USArmyZ28

iTrader: (3)

Alright, let me elaborate a bit more on the problem since I was in a rush and made this topic with my blackberry lol.

Okay I turn the key and the engine instantly starts to "cycle" no starter hesititation what so ever, then it fires up after a few seconds of "cycling". It only does this on cold starts as well, or if the car has been sitting for a period of time. Once the car is running I can shut it off and turn right back on with no problem.

I know one of my SES code's is related to TPS positioning, but I have had that code for a while and thought it was just related to my tune? I just had the spark plugs and fuel filter changed about 3k miles ago as well. The car runs hard and doesnt give me any other problems besides this.

I will check fuel pressure tomorrow, thanks guys.

the_merv

iTrader: (88)

Has it been tuned and have you changed the Plugs?

USArmyZ28

iTrader: (3)

Yes its been tuned, one thing it may be is that it was tuned in Kentucky and now its in Miami Florida. Maybe the humidity is throwing it off? But I drove its for like a month before any problems happen, yes the plugs were changed approx 3,000 miles ago.

Merv, what unit are you with?

the_merv

iTrader: (88)

USAF Fire Dept.

USArmyZ28

iTrader: (3)

^^ sweet good luck man.

Does anybody else happen to know what could be the problem?

killagt

iTrader: (3)

man that happent to my z28 also, most peoples told it the fuel pump is weak, or loss pressure on the fuel pump.

slow00gt

iTrader: (2)

I would look at the fuel pump. Sounds like its taking the pump a few seconds to get enough fuel to the motor for it to start.

z28punk

mine does the same thing. I put a fuel pressure guage on it and found that the fuel pressure when I turn the key on pegs at 60 psi and immediately drops steadily down to 0 within 30 seconds.

USArmyZ28

iTrader: (3)

I really hope its not the fuel pump because if it is Im going to sell it, I dont want to spend another 600$ ******* dollars on labor

If it is the fuel pump, wouldnt the car run a little funny? I have gone WOT quite a few times and it seems like theres no problem

Is there a way I can check my fuel pressure at home? Id rather not let the slime ball's at the dealership tell me I need a new fuel pump for 880$

killagt

iTrader: (3)

autozone let you borrow one of the fuel pressure check, plug it in on the fuel rail and turn the key to on ( not start the car ) and check the guage for psi level and see if it hold the pressure. if it drop fast, you got a leak.

THE SHOP

Your losing fuel pressure, get the gauge pop it on turn the key to the on position then watch your pressure fall or hold.

USArmyZ28

iTrader: (3)

Effin fuel pump was bad, just ordered a Walbro and installing it my self. 100 dry shot here I come!

USArmyZ28

iTrader: (3)

Thanks for all the help guys btw

Joshiedoom

iTrader: (4)

Good deal! Common thing with gm.

the_merv

iTrader: (88)

Cut a Panel for it..

Joshiedoom

iTrader: (4)

Thanks for just reminded me that I spent 10 hours cleaning my interior out of the car and did NOT do this yet after putting it all back in.

USArmyZ28

iTrader: (3)

I am, I got the Walbro direct fitment designed for our cars so I dont have to cut the bucket or any of that ****.