BACKFIRE THROUGH INTAKE.. WONT START..PLEASE HELPPPPP
Senior Member
Joined: Feb 2007
Posts: 4,445
From: 34669
RE: I NEED HELP ASAP bEFORE I PUT MORE DENTS IN CAR..WONT START!!!!!
Well.... you mention that youre fuel is gettin there, and its getting a spark... but no mention of whether its getting all the air it needs... BTW is it a 420a or a 4g63?
Senior Member
Joined: Nov 2006
Posts: 3,430
From: Colorado Springs, CO.
RE: I NEED HELP ASAP bEFORE I PUT MORE DENTS IN CAR..WONT START!!!!!
420a and paintball, Dusty.
Timing sounds off, whether it be ignition timing or base timing. Try not to rush this because things can get really annoying when dealing with the motor.
What was the issue with the spark paintball?
Timing sounds off, whether it be ignition timing or base timing. Try not to rush this because things can get really annoying when dealing with the motor.
What was the issue with the spark paintball?
Thread Starter
Joined: Jun 2007
Posts: 83
From:
RE: I NEED HELP ASAP bEFORE I PUT MORE DENTS IN CAR..WONT START!!!!!
oh idk... when i first tested it myself i was cranking and my friend was holding the plug on the valve cover block thing haha engine casing haha,... and he said no spark on the 2nd and weak on 3rd... but tehn my dad and i went out and done it but used the same plug on each one and got spark in all ... but we held the plug like a inch above the headers and cranked it and the spark jumped.. it didnt look like alot but i guess its all u need. but THANSK SILVERCOUP FOR ALWAYS HELPING ME... any info?
Senior Member
Joined: Nov 2006
Posts: 3,430
From: Colorado Springs, CO.
RE: I NEED HELP ASAP bEFORE I PUT MORE DENTS IN CAR..WONT START!!!!!
I say to check the timing, base and ignition, because the intake valve is open while the fuel/air is still in it's "explosion" or fire phase. It can be preignition or knock, but it's hard to tell because we don't know all the variables or how exactly the intake is popping.
Here's what I see on my end....you have fuel, spark, air, and compression. Have you checked your firewall relays or even changed them out?
This is why I say it's timing related.
BTW, your friend is a meathead for trying to make the plug arc on an aluminum valve cover. You're supposed to arc it on a bolt ON the valve cover and not the actual valve cover, lol. Anything that you can take an mulitmeter to and have continuity is a good spot (the manifold for example). Aluminum won't give a reading in this, lol.
Here's what I see on my end....you have fuel, spark, air, and compression. Have you checked your firewall relays or even changed them out?
This is why I say it's timing related.
BTW, your friend is a meathead for trying to make the plug arc on an aluminum valve cover. You're supposed to arc it on a bolt ON the valve cover and not the actual valve cover, lol. Anything that you can take an mulitmeter to and have continuity is a good spot (the manifold for example). Aluminum won't give a reading in this, lol.
