help asap starting problem

JaegerUtah · 12-31-2009, 12:14 AM

sorry my spelling is off. i have it back firing now but it is doing it at a faster rate. the only things i have had to change on it and use from my old motor are the distributor, injectors, and part of the intake manifold. other then that i am lost. it sounds like she wants to come alive for a few sec's but just fires wrong some where. i have done TDC a few times now and i get the same thing in the end. thank u for giving me a had with another supra

cre · 12-31-2009, 06:47 AM

Okay, recap for me, k? Some of this is repetitive, just humor me. Some of these I don't really think would cause this, but let's be thorough.

The car is an '89 and the replacement engine is a '86.5, correct?
Have you double checked the spark plug wires are plugged in in the correct order?
What year ECU are you using?
What year injectors are you using AND what color are their tips (yellow or green)?
Do you have the injector relay installed?
Have you verified that the injectors plugs are connected in the right order?
Is the air flow meter plugged in?
You have pulled the distributor to ensure it is at 0?, same for cam gears and for the crank, correct?
Have you checked that ALL grounds are securely connected?

Try pulling the dizzy and rotating the shaft 180? and reinstall... I've heard that's happened to a fair number of people.

I'm a bit lost here too other than what I've already mentioned.

12-31-2009, 06:47 AM	#2
cre Toyota Racing Development Join Date: Apr 2007 Posts: 5,038	Okay, recap for me, k? Some of this is repetitive, just humor me. Some of these I don't really think would cause this, but let's be thorough. The car is an '89 and the replacement engine is a '86.5, correct? Have you double checked the spark plug wires are plugged in in the correct order? What year ECU are you using? What year injectors are you using AND what color are their tips (yellow or green)? Do you have the injector relay installed? Have you verified that the injectors plugs are connected in the right order? Is the air flow meter plugged in? You have pulled the distributor to ensure it is at 0?, same for cam gears and for the crank, correct? Have you checked that ALL grounds are securely connected? Try pulling the dizzy and rotating the shaft 180? and reinstall... I've heard that's happened to a fair number of people. I'm a bit lost here too other than what I've already mentioned. __________________ If something breaks or you need to contact a member of the administration please post HERE. Unless it's a private or administration matter please post it on the forum. It benefits no one else if car related questions aren't posted for future users and takes away from the time I'm able to spend helping on the rest of the forum. If you're so inclined I'm always more than happy to accept tips via PayPal. Tip Jar --->

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12-31-2009, 12:14 AM	#1
JaegerUtah Stock Join Date: Dec 2009 Location: syracuse utah Posts: 6	sorry my spelling is off. i have it back firing now but it is doing it at a faster rate. the only things i have had to change on it and use from my old motor are the distributor, injectors, and part of the intake manifold. other then that i am lost. it sounds like she wants to come alive for a few sec's but just fires wrong some where. i have done TDC a few times now and i get the same thing in the end. thank u for giving me a had with another supra