68_firechicken

iTrader: (1)

Here's the deal I wired up my motor and tried foreign it up but nothing happens. It cranks over it has fuel and fire. The PCM gas the vats deleted and works on my buddy's car. The engine cranks and acts like it wants to run but nothing. I need help because I am at a loss right now. Has anyone had this problem?

sdetweil

I had a similar problem on first startup.. if u try some starter fluid in the manifold does it fire? another way to test is unplug the TPS plug (I did the cable style throttle body and miswired the connector), computer thought the throttle was wide open (doesn't fire injectors if wide open on start)

Sam

john j oliver

iTrader: (4)

a novice here. check your grounds, check you connectors to everything, check you fuel. are you returning a code?

68_firechicken

iTrader: (1)

It was Picking up a mil code and a code for the alternator. I did try some starter fluid( I didn't want to) and nothing. It just turns over and sputters. I will try disconnecting the tps and see why happens. Could it have anything to do with the timing?

aknovaman

iTrader: (7)

Gummed up injectors. Happens all the time with engines that have not run in a while.
Take them out and soak them in kerosene for an hour.
Re-install them and it should fire right up.

sdetweil

and of course make sure the crank and cam position sensors are plugged in..

sam

Alwhite00

iTrader: (1)

We had a 5.3 that had sat a couple years and the injectors were stuck - Soaked them a couple hours and it fired right up. I tested them with a 9V battery - They click when functioning correctly.

LK

psiconversion

iTrader: (5)

Double check that your 'KEY ON' power wires do not lose power when you have the key in the CRANK position.

When you say you have 'FIRE' how did you verify this?

Jon
PSI

68_firechicken

iTrader: (1)

i checked the power on wires with a volt meter and everything was reading good. i also checked all plug wires and plugs. i am going to try all of the ideas. i keep my car on base and they are only open on the weekends.

mice13

iTrader: (9)

I bet its's what jon(psi) said, thats what happened to me.

72chevelle6.0

iTrader: (22)

yeah I agree with Jon also.. if it does not run on starter fluid it is not the injectors.. it is no fire..

5.3Lnova

I had a similar problem with my 5.3 lmg turned out my fuel pump had come disconnected. i also had the ignition problem mentioned above from my ignition switch being wired incorrectly and the computer losing power.
hope you find the problem

Pop N Wood

iTrader: (1)

Not sure how you check the trigger signals to the coils with a voltmeter, but you actually disconnected a plug wire, stuck a nail or something down in there and held it next to the block and watched spark jump the gap?