SSNISTR

iTrader: (10)

Hey guys, I recently did a cam swap. I also had the car tuned by a reputable shop. My issue is that sometimes the car won't start on the first try. Sometimes it will, sometimes it takes two tries, sometimes it takes a bunch. I am getting no codes, and the car runs great. I tried changing the key thinking maybe the chip was worn, no go. Any ideas on what could be causing this? A friend of mine familar with LSx tuning really thinks it needs more tuning (exactly what I don't know). Any thoughts on what the cause can be?

SSP Racing

iTrader: (24)

If it is the FMS cam in your sig then it could be the fact that CamMotion ground some cams with the cam sensor pickup on backwards. Some of them might have gone to FMS since I seem to recall they use CamMotion. This required that the A and C wires of the cam sensor be switched. I've done this and the car ran fine, but had starting issues. The car behaved exactly as you are saying yours does. Maybe that is your problem, maybe its something totally different.

John

SSNISTR

iTrader: (10)

I had one of the bad cams and went through all that crap. I decided I wanted a new cam, and this is a new one. Thanks though.

SSP Racing

iTrader: (24)

hmm... no tellin then. I would think the tune would have to be very jacked up to make the car not want to start all of the time. And if that was the case, the start-up problem would probably be your last concern.

SSNISTR

iTrader: (10)

Like I said though sometimes it starts right up, other times it takes a few tries. I know there must be some adjustments that can be made in some tables in the tuning software. I'm just looking for suggestions before I make the 90 minute trip to my tuner.

BIG_MIKE2005

iTrader: (116)

possible starter goin out???

Mystic 98 TA

iTrader: (4)

Maybe I can help. I installed my CheaTR cam almost two years ago. I've had problems starting too. It (finally) went to the tuner last week (picking it up tomorrow . One thing discussed was the starting issue. For a while I thought it might have been a starter or the coils or something electrical, but the motor would turn over just fine, even after repeated tries.

On the Dyno he noticed the problem. It was caused by a lack of fuel pressure. For whatever reason, the fuel pressure just goes away after the car is turned off, instead of keeping a constant pressure in the line like it's supposed to. The Tuner replaced the stocker fuel pump with a 255L pump and he says its working just fine now.

Hope this helps. Thats' what my problem was.

-Charlie

SSNISTR

iTrader: (10)

Thought that, but it cranks....the starter sounds healthy.

Mystic 98 TA

iTrader: (4)

(bump for my previous post...crazy thread-lag )

SSNISTR

iTrader: (10)

I'll look into that, but the last time I checked my car had good pressure.

WestSide

iTrader: (6)

You're on the stock fuel system right? Your car should hold pressure when it's off, unlike a lot of aftermarket fuel setups. Do you let the pump prime in the ON position for a second or two before putting the key to START?

SSNISTR

iTrader: (10)

I think I might have found the issue. I swapped the ignition relay with the fan relay and it started on the first shot three times. I'm hoping it wasn't luck and the relay was bad.....

cowboysfan

cool, hope it works out for ya!..