Motor won't fire, any ideas?

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Nov 6, 2007 | 09:31 PM

JonintheRedZ28

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Staging Lane

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From: Plant City, FL

Motor won't fire, any ideas?

I just got my motor back in my 98 Z28, went from a stock motor with spun rod bearings to a Comp 228/230 cam, comp valvetrain, comp lifters, comp pushrods, pacesetter LTs, and 02 heads. Everything is connected but the A/C and an emissions plug we can't find a connector for, passenger side, near the back of the head, and the motor will turn but not crank. I haven't checked for spark yet because we just got it rotating yesterday and the trans cooler lines weren't on, so we spent today putting them on. I will check for spark tomorrow, and does anyone know how I check to see if the injectors are squirting? Thanks-Jon

Nov 6, 2007 | 10:40 PM

snake charmer

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From: The south

just double check everything , grounds , coil paks , wires . as far as the fuel when you turn the key the whine you hear right before the final turn is your fuel pump .
good luck

Nov 7, 2007 | 02:35 PM

98Camarod

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From: Summerville, SC

You can get what is called a noid light and put it on each injector. It will light up as the injector pulses. If you took the motor out, I'd say check those grounds on the back of the head and make sure they are not broken. As for fuel, push in the valve stem once your key is in the on position. If you have fuel pressure then it will squirt out. Make sure you have fire and then report back.

Nov 8, 2007 | 02:28 PM

NBM2001z28

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From: Bourbonnais, Illinois

Take a picture of the connector that you cant find to plug in and PM me. Ill let ya know what it is.

Nov 8, 2007 | 02:50 PM

98Camarod

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Quote:

Originally Posted by NBM2001z28

Take a picture of the connector that you cant find to plug in and PM me. Ill let ya know what it is.

I didn't even pick up on that. There is a cam sensor and map sensor that are that way. If the cam sensor is not plugged in then it won't start. If the map is not plugged in it will start but run shitty.

Nov 8, 2007 | 03:04 PM

felton316

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From: TEXAS

What about the crank sensor above the starter? Is it plugged in?

Nov 19, 2007 | 07:42 PM

JonintheRedZ28

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Staging Lane

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From: Plant City, FL

Yeah, I'll see if I can ****** a pic of the sensor not plugged in, but I found out my starter was bad, I'll let you know what happens, thanks for the input guys.

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Nov 20, 2007 | 09:04 PM

1320 killer

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that's cool. your problem is fixed. so how does she run. you need to get her tuned.

Nov 21, 2007 | 01:03 AM

#10

JonintheRedZ28

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Staging Lane

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From: Plant City, FL

runs surprisingly smooth for an untuned car but still a bit rough once the idle settles down, I'll be getting a tune soon.
Can you tell I was quite excited?