Missfiring

igosaur · 07-14-2008, 06:07 AM

My liitle baby has started missfiring pretty badly.

However, after I have been driving around for a while and the engine has got nice and hot the problem seems to gradually vanish.

I do have a few holes in the exhaust and was wondering if this could be the problem or is it more likely to be something like dirty injectors that start to clear as they heat up?

It can't be the spark plugs as I have just changed them.

7MGE 3.0i Auto

Thanks all

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Chambers · 07-14-2008, 04:08 PM

It could be throwing a little to much fuel into the mixture from a bad o2 sensor, or your timing could be a little bumped in the wrong direction.

Check your codes as well, it may be somthing else.

Good luck.

igosaur · 07-17-2008, 04:53 PM

Thanks for that. Now for the stupid question.

How do I check the codes?

Chambers · 07-17-2008, 10:56 PM

http://www.swaqvalley.com/TSRM/07_FI.pdf

There, start at page 23 and start reading, but if you so feel inclined to do so, read the entire book, it will never hurt to do so, lol.

Good luck.

CyFi6 · 07-18-2008, 05:48 AM

Check in the spark plug valley to make sure theres no coolant or oil down there, sometimes the coolant lines on the throttle body drip a little and give misfires because the spark plug tube gets full of water.

07-14-2008, 06:07 AM	#1
igosaur 3" Exhaust Join Date: Dec 2006 Location: Gosport Posts: 59	Missfiring My liitle baby has started missfiring pretty badly. However, after I have been driving around for a while and the engine has got nice and hot the problem seems to gradually vanish. I do have a few holes in the exhaust and was wondering if this could be the problem or is it more likely to be something like dirty injectors that start to clear as they heat up? It can't be the spark plugs as I have just changed them. 7MGE 3.0i Auto Thanks all -------------------------- Atheist Quotes

07-14-2008, 04:08 PM	#2
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	It could be throwing a little to much fuel into the mixture from a bad o2 sensor, or your timing could be a little bumped in the wrong direction. Check your codes as well, it may be somthing else. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

07-17-2008, 10:56 PM	#4
Chambers walbro fp Join Date: May 2007 Location: USA - Harford County, Maryland Posts: 481	http://www.swaqvalley.com/TSRM/07_FI.pdf There, start at page 23 and start reading, but if you so feel inclined to do so, read the entire book, it will never hurt to do so, lol. Good luck. __________________ Whats in the garage, well.... in the yard. 1986.5 Toyota Supra - NA - 5 spd 1986 Ford Ranger Lowrider - 5 spd 1984 Ford Ranger XLT - 7" Lift - 4X4 - Auto "Stuck in the 80's"

07-17-2008, 04:53 PM	#3
igosaur 3" Exhaust Join Date: Dec 2006 Location: Gosport Posts: 59	Thanks for that. Now for the stupid question. How do I check the codes?

07-18-2008, 05:48 AM	#5
CyFi6 3" Exhaust Join Date: Oct 2007 Location: SLO Posts: 234	Check in the spark plug valley to make sure theres no coolant or oil down there, sometimes the coolant lines on the throttle body drip a little and give misfires because the spark plug tube gets full of water.