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Random B18 engine anomalies 140-160 1968

posted by Rhys on Sun Jun 28 18:47 CST 2009
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last visit: Tue Nov 20 10:22 CST 2012

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What's happening is that the PCV valve is either malfunctioning or the wrong one for these engines. Most modern ones are for big V-8's and they don't work on these engines.
So disconnecting the hose and plugging the fitting is a diagnostic trick - get it?
It proves the problem is the PCV. The extra air coming through the hose does not pick up fuel in the carbs and that has a drastic leaning effect that you are trying to compensate for with wild tuning adjustments on the carbs, trying to get the mixture rich enough. That won't work.
The PCV needs fixing, and fiddles with the carbs and hopeful wishes won't repair it. Vent the crankcase to the air filter if you wish - most of the blow-by will find it's way into the engine to be burned. If low emissions is your game, buy a new Honda because there is NO WAY a B18 Volvo will EVER be a low emission engine.
Fix or disregard the PCV system and the engine will accept a normal carb tune and you can drive the thing.

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Random B18 engine anomalies [140-160][1968]
posted by drj434343 subscriber on Fri Jun 26 12:14 CST 2009 >

Random B18 engine anomalies [140-160][1968]
posted by walrus3 subscriber on Fri Jun 26 13:10 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by alschnertz subscriber on Fri Jun 26 13:36 CST 2009 > V
- Random B18 engine anomalies [140-160][1968]
  posted by drj434343 subscriber on Fri Jun 26 19:59 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by alschnertz subscriber on Fri Jun 26 23:45 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by Pebee subscriber on Sat Jun 27 05:17 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by sdewolfe subscriber on Fri Jun 26 23:48 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by Pebee subscriber on Fri Jun 26 14:55 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by derek uk subscriber on Sat Jun 27 00:05 CST 2009 > V
- Random B18 engine anomalies [140-160][1968]
  posted by drj434343 subscriber on Sat Jun 27 07:13 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by Pebee subscriber on Sat Jun 27 10:20 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by drj434343 subscriber on Sat Jun 27 10:24 CST 2009 > V
      - Random B18 engine anomalies [140-160][1968]
        posted by Pebee subscriber on Sat Jun 27 15:42 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by drj434343 subscriber on Sat Jun 27 10:23 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by derek uk subscriber on Sat Jun 27 12:20 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by Rhys on Sat Jun 27 12:38 CST 2009 > V
- Random B18 engine anomalies [140-160][1968]
  posted by drj434343 subscriber on Sun Jun 28 17:27 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by aaron74 on Sun Jun 28 17:57 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by drj434343 subscriber on Sun Jun 28 18:18 CST 2009 > V
      - Random B18 engine anomalies [140-160][1968]
        posted by aaron74 on Sun Jun 28 18:39 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by drj434343 subscriber on Sun Jun 28 19:03 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by sdewolfe subscriber on Sun Jun 28 22:29 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by derek uk subscriber on Sun Jun 28 22:52 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by drj434343 subscriber on Mon Jun 29 09:13 CST 2009 > V
      - Random B18 engine anomalies [140-160][1968]
        posted by aaron74 on Mon Jun 29 12:25 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by drj434343 subscriber on Mon Jun 29 16:37 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by aaron74 on Mon Jun 29 17:27 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by Rhys on Tue Jun 30 10:42 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by Rhys on Sun Jun 28 18:47 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by drj434343 subscriber on Thu Jul 2 10:14 CST 2009 > V
- Random B18 engine anomalies [140-160][1968]
  posted by drj434343 subscriber on Thu Jul 2 12:31 CST 2009 > V
  - Random B18 engine anomalies [140-160][1968]
    posted by Rhys on Fri Jul 3 06:34 CST 2009 > V
    - Random B18 engine anomalies [140-160][1968]
      posted by drj434343 subscriber on Fri Jul 3 07:56 CST 2009 > V
      - Random B18 engine anomalies [140-160][1968]
        posted by Rhys on Fri Jul 3 11:31 CST 2009 > V
        
        Random B18 engine anomalies [140-160][1968]
        posted by drj434343 subscriber on Sat Jul 4 07:42 CST 2009 > V
        
        You've found it, and should be saying VOILA! right about now! [140-160][1968]
        posted by Ron Kwas on Sat Jul 4 09:48 CST 2009 > V
        
        You've found it, and should be saying VOILA! right about now! [140-160][1968]
        posted by drj434343 subscriber on Tue Jul 7 11:57 CST 2009 > V
        
        You've found it, and should be saying VOILA! right about now! [140-160][1968]
        posted by Kentucky subscriber on Tue Jul 7 13:50 CST 2009 > V
        
        mail address [140-160][1968]
        posted by Rhys on Sat Jul 4 10:34 CST 2009 > V
- Random B18 engine anomalies [140-160][1968]
  posted by RNANS on Fri Aug 7 17:56 CST 2009 > V

Random B18 engine anomalies [140-160][1968]
posted by drj434343 subscriber on Wed Jul 29 18:04 CST 2009 > V

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Random B18 engine anomalies 140-160 1968