weird spark problem, help please!!

**jinxdoc** · 10-26-2005, 07:10 PM

i am helping a friend with a '90 celica with 5s-fe naturally aspirated. he swapped heads and now it won't fire. i've checked lots out against the factory manual and found nothing obvious. everytime you crank the engine the coil fires exactly 4 times regardless of how long you continue to crank it. any and all help appreciated.
thanks, steve

**MDproskater2000** · 10-27-2005, 02:03 PM

ehh,, thats a really tough one.

**MartinGouda** · 10-27-2005, 02:28 PM

change the cap and rotor?

**Pineapple** · 10-27-2005, 03:13 PM

Check for lose ground wire. Especially the one on intake manifold.

**MDproskater2000** · 10-27-2005, 03:56 PM

yeah thats what i thought could have been wrong when i first read it. thats probably what it is

**jinxdoc** · 10-28-2005, 11:19 AM

I had asked the owner if he disconnected any grounds. The test procedure in the manual sorta pointed that way. Now I have an idea where to start looking. Thanks bunches!! Steve

**Pineapple** · 10-28-2005, 11:29 AM

^He has to remove grounds to swap the head. Probably its the one on intake manifold. It mount with a screw on one runner. Its hard to get to cause it close to fire wall. Also there is one from tranny to the block.

10-26-2005, 07:10 PM	#1 (permalink)
jinxdoc Posts: 2 Join Date: Oct 2005 Last On: 10-27-2005 10:05 AM	weird spark problem, help please!! i am helping a friend with a '90 celica with 5s-fe naturally aspirated. he swapped heads and now it won't fire. i've checked lots out against the factory manual and found nothing obvious. everytime you crank the engine the coil fires exactly 4 times regardless of how long you continue to crank it. any and all help appreciated. thanks, steve

10-27-2005, 02:03 PM	#2 (permalink)
MDproskater2000 I need another celica!!!! Location: NY Posts: 189 Join Date: Oct 2005 Last On: 03-19-2007 03:26 PM Vehicle: 91 Celica gt 2nd Vehicle: 2003 Blaster	ehh,, thats a really tough one. __________________

10-27-2005, 02:28 PM	#3 (permalink)
MartinGouda USE THE SEARCH FEATURE!!! Location: Streetsville Posts: 12,024 Join Date: Oct 2003 Last On: Yesterday 02:50 AM Vehicle: DelsolTurboN2O 2nd Vehicle: Talon TSI AWD	change the cap and rotor? __________________ www.martingouda.com.... the rumors are all true...

10-27-2005, 03:13 PM	#4 (permalink)
Pineapple Location: Toronto Posts: 4,299 Join Date: Jan 2004 Last On: Today 07:48 PM	Check for lose ground wire. Especially the one on intake manifold. __________________ http://photos.yahoo.com/fredericklaw http://members.rankmyride.com/pineapplelaw

10-28-2005, 11:29 AM	#7 (permalink)
Pineapple Location: Toronto Posts: 4,299 Join Date: Jan 2004 Last On: Today 07:48 PM	^He has to remove grounds to swap the head. Probably its the one on intake manifold. It mount with a screw on one runner. Its hard to get to cause it close to fire wall. Also there is one from tranny to the block. __________________ http://photos.yahoo.com/fredericklaw http://members.rankmyride.com/pineapplelaw

10-27-2005, 03:56 PM	#5 (permalink)
MDproskater2000 I need another celica!!!! Location: NY Posts: 189 Join Date: Oct 2005 Last On: 03-19-2007 03:26 PM Vehicle: 91 Celica gt 2nd Vehicle: 2003 Blaster	yeah thats what i thought could have been wrong when i first read it. thats probably what it is

10-28-2005, 11:19 AM	#6 (permalink)
jinxdoc Posts: 2 Join Date: Oct 2005 Last On: 10-27-2005 10:05 AM	I had asked the owner if he disconnected any grounds. The test procedure in the manual sorta pointed that way. Now I have an idea where to start looking. Thanks bunches!! Steve

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