740 running ruff, exhaust rich

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  #21  
Old 10-24-2015, 10:10 AM
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He doesn't need a ring job! Never seen a b230 with 200k to need a ring job!
May be '60's Ford or Chevy or a Dodge but not a b230...
 
  #22  
Old 10-24-2015, 11:45 PM
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Ok Lev. Your the pro. But I have only been working on cars, trucks sense 1972. So I guess I don't know nothing. I will leave with this. **** you very much.
 
  #23  
Old 10-25-2015, 11:25 AM
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Before quickly getting hot under the collar why don't you just wait to see how the case develops?

May be you should make some time to work on your manners and grammar skills while you are at it.

You obviously have been struggling with the English language since before 1972, and look at the results!
 

Last edited by lev; 10-25-2015 at 12:23 PM.
  #24  
Old 11-02-2015, 04:23 PM
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Originally Posted by lev
Are the plugs wet with gas? Chances are they are contaminated just like your oil--change both!

Usually "run rich" is caused by too much air which sends a signal to the computer to send more fuel which doesn't get burned so it goes into the oil and fouls the plugs

Look for an air leak!

The air valve is NOT supposed vibrate.
Hey lev, been working and volvo has been sitting but i played around with it this past weekend. New info, while the car is running i unplugged IAC valve and the car stalled, plugged it in and car started and ran, does this mean the valve works? Also unplugged map sensor while car running and nothing happened. Starting at the back i unplugged each fuel injector individually and the car would start running really ruff and almost stall, the back 3 did this. When i unplugged the last one or the one closest to front nothing happened??? I checked that plug and it was dry and had spark. Also gas flew out of hole when cranking to check for spark, i made sure plug was no where near gas.
 

Last edited by fartoright; 11-02-2015 at 04:27 PM.
  #25  
Old 11-02-2015, 04:26 PM
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hotplugging Bosch MAF/AMM's can fry things. I dunno about Regina MAP.
 
  #26  
Old 11-02-2015, 04:31 PM
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Originally Posted by pierce
hotplugging Bosch MAF/AMM's can fry things. I dunno about Regina MAP.
Of course it would, i may just have to just take it to shop. I like fixing things myself but i may be over my pay grade
 
  #27  
Old 11-03-2015, 08:47 AM
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At this point I'd take a compression test to eliminate something serious like a valve problem. If the compression is OK, then you are looking at the cause of the misfire because this is what you have based on what you are reporting.

So far, seems like you have a problem with #1 cylinder...
 
  #28  
Old 06-19-2017, 07:59 PM
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Originally Posted by lev
At this point I'd take a compression test to eliminate something serious like a valve problem. If the compression is OK, then you are looking at the cause of the misfire because this is what you have based on what you are reporting.

So far, seems like you have a problem with #1 cylinder...
I never updated this post. Sorry. But the problem was bad #1 fuel injector.
 
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