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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Exhaust Misfire Video

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Old Aug 15, 2009 | 09:07 AM
  #1  
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From: GA
Exhaust Misfire Video

..............

Last edited by buckz6319; May 20, 2010 at 05:38 PM.
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Old Aug 15, 2009 | 09:57 AM
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From: the great Maine wilderness
usually.... when your exhaust sucks back briefly... its an indication of a bad/stuck exhaust valve.
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Old Aug 15, 2009 | 10:07 AM
  #3  
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From: Lake City, Fl
Originally Posted by Team420
usually.... when your exhaust sucks back briefly... its an indication of a bad/stuck exhaust valve.
X's 2

the stuck open valve will pull air in through the exhaust during the intake stroke
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Old Aug 15, 2009 | 10:44 AM
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Probably #6 Exhaust valve burnt.
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Old Aug 15, 2009 | 11:43 AM
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From: GA
..............

Last edited by buckz6319; May 20, 2010 at 05:38 PM.
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Old Aug 15, 2009 | 11:51 AM
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From: the great Maine wilderness
When you did your compression test; was the motor at normal operating temp? maybe it only sticks when warm??
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Old Aug 15, 2009 | 12:17 PM
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Originally Posted by buckz6319
thanks for the input.....exhaust valve burnt??......#6....even with good compression?
Sorry, I forgot you did the compression test.
The exhaust valve burning up is a very common problem with these motors though.
Yeah, #6 Plug does look a little toasty.
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Old Aug 15, 2009 | 12:45 PM
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From: GA
[................

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Old Aug 15, 2009 | 12:56 PM
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................

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Old Aug 15, 2009 | 01:22 PM
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From: GA
................

Last edited by buckz6319; May 20, 2010 at 05:39 PM.
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Old Aug 31, 2009 | 04:33 PM
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..............

Last edited by buckz6319; May 20, 2010 at 05:39 PM. Reason: sorry was trying to add youtube video
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Old Nov 8, 2009 | 04:34 PM
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Did you ever figure this out? I am all up for other options besides removing the heads.
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Old Nov 8, 2009 | 04:47 PM
  #13  
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From: GA
................

Last edited by buckz6319; May 20, 2010 at 05:39 PM.
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Old Nov 9, 2009 | 05:46 AM
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From: Abington, PA
Originally Posted by buckz6319
bostinchick.......I haven't figured out the misfire yet and have given up on my pursuit of it...I currently have had other issues to deal with at the moment.....and thanks for asking
looks like you have a nice rig in your signature
Thanks, I wish I could figure out my misfire issue. I have replaced almost everything. Compression test is top of the list but with work I am super busy. I wanted to search around and make sure that my symptoms could be related to something else because I really don't feel like pulling the heads lol. By the time you do all that work you are halfway there to a 3.4 swap anyway.

Yea she's coming along, at times I really want to give up and sell her cheap and start over. Here is my vid maybe it will help someway?
http://www.youtube.com/watch?v=tKDMqhqQ-WM
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Old Nov 9, 2009 | 02:13 PM
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From: GA
..............

Last edited by buckz6319; May 20, 2010 at 05:40 PM.
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Old Nov 9, 2009 | 03:54 PM
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From: Abington, PA
^ ^ Looking at that it confirms....I would already be halfway there ripping out that headache. Good luck with your sale
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Old Nov 9, 2009 | 04:00 PM
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..........

Last edited by buckz6319; May 20, 2010 at 05:40 PM.
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