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11-21-2009, 06:02 PM
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#1 | |
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AF Newbie
Join Date: May 2006
Location: Ottawa
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3.4l d.o.h.c
Engine backfires while turning over, but will not start.
Ran perfect a couple days ago. Any input would be great. Thanks in advance |
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11-21-2009, 06:20 PM
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#2 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
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Re: 3.4l d.o.h.c
What Elements do you need for a fire?
Air, Fuel, Ignition, and Timing. This is a 1992 with a OBD I system, so there's less codes. The backfire tells us, that you do have some fuel, and fire. Doe's this car have a MAF sensor? |
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11-21-2009, 06:34 PM
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#3 | |
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AF Newbie
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Re: 3.4l d.o.h.c
This car does not have a MAF sensor
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11-21-2009, 08:54 PM
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#4 | |
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AF Enthusiast
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Location: garner, North Carolina
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Re: 3.4l d.o.h.c
1995 and newer have OBD II systems, these codes can help us troubleshoot.
Old School Troubleshooting - 1) How many miles are on this car? 2) How many miles are on the old plugs & wires? |
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11-21-2009, 09:47 PM
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#5 | |
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AF Newbie
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Re: 3.4l d.o.h.c
1) Car has 142000 miles
2) Plugs and wires were changed about a month ago Recently have done: -timing belt (replace idler pulleys, tensioner, and hydraulic tensioner) -replaced o-ring for distributor drive unit -head gasket on rear bank |
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11-23-2009, 01:01 AM
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#6 | |
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AF Regular
Join Date: Jan 2008
Location: Republic, Washington
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Re: 3.4l d.o.h.c
Did problem start before or after changing timing belt? This car has the predecessor to the MAF which is the Intake Air temp. sensor.
__________________
 Bearwulf, the "howling Grizzly" of the north.MONOTONY is the worst driving hazard, so SHUT-UP when I'm driving. 97-Lumina LS 1891Argentine 7.65 with scope! |
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11-23-2009, 12:55 PM
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#7 | |
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AF Newbie
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Re: 3.4l d.o.h.c
Problem started 2 weeks after the belt was changed. Car ran perfect. shut it down, went to start it the next day and it wouldn't start
Last edited by 92_Lumina_Z34; 11-23-2009 at 05:03 PM. |
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11-23-2009, 05:40 PM
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#8 | |
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AF Enthusiast
Join Date: Mar 2008
Location: garner, North Carolina
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Re: 3.4l d.o.h.c
It's all about timing!
1) Verify and check your timing. A loose tensioner, could of caused the timing to jump a tooth. http://www.automotiveforums.com/vbul...d.php?t=954555 |
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