pewter&orangeZ28

Did a head swap on my ls1 with raptor cam from thunder.....car is turning over but will Not start....everything is pluged in and all the grounds are hooked up but car still will Not Start...Also car has fuel and spark any info will help guys....

Blackpanther99

iTrader: (8)

Did you do this at home? or did a shop did it for you?

97camaroguy

iTrader: (5)

How did you confirm fuel and spark? Did you buy new plugs? Does the engine sputter at all or at least try and start?

trans_am7935

iTrader: (15)

there can be so many things that could cause this, most common are

cam installed wrong
coil packs not plugged in
fuel lines not hooked up
fuel pump relay not plugged in
computer unplugged

check all of these. next have a buddy with you and have him start the car, while you hold the throttle body fully open and listen for a sucking sound to confirm air is being pulled into the motor.

did you try and remove the MAF and spray some starter fluid in the intake?

poltergeist 02

iTrader: (65)

check your pushrod length first!!! in your other thread you stated that you had the heads milled and still retained the 7.4 pr's.

DaFireMan

iTrader: (5)

When my motor removed for the freshening up i smashed the wires for the crank sensor between the starter and the block. Check for fuel on the rail at the valve, check for spark, check your grounds(rear of the heads, pass side of block, an ground strap by alt), if u have both(ground and spark) check the crank sensor and your harness.