why temp difference left and right , exhaust ?

5

Asked by Apr 24, 2012 at 12:28 PM about the Volkswagen Beetle

Question type: Maintenance & Repair

great  running  69'  .   starts right up ,  and  runs  like  it   should , or ,  so  it  seems  ..    there   is  quite a  difference   
in  exhaust temp  ..  left  and   right  ...   with   the  right side ,  much  hotter   ....  i  put a  72'   dual port in it , out  of a  
junker  ..    could   this   be   valve  adjustment  issues  ?    my  first   bug  ,   $  300  ,  in  the  weeds  ,   and  $400  
later  it   is  about   to  hit  the  road  again   ..   

3 Answers

505

Sounds like a carb adjustment is needed...One side running leaner than the other...

2 of 2 people found this helpful.
685

The engine appears to be a dual port. I have had that problem on a couple of engines and it turned out to be sucking air around the head to intake runner. Spray carb cleaner around the gasket with the engine running and see if it makes a difference. If it smooths out change the intake gasket. Hope this helps

2 of 2 people found this helpful.
195

The pre- 1971 type 1 engines had the oil cooler in the cooling air path of the left cylinders. Because of this, the ignition timing on the number three cylinder is retarded 3 degrees. This makes the cylinder head run slightly cooler than the right side head. If you have an EGT probe on each side of the engine, the temperatures will be different unless the probes are mounted exactly in the same place on the number [1 and 4] or [2 and 3] cylinders. That is nearly impossible to do with a stock exhaust system unless the probes are within just a couple of inches of the head. Dual port engines had the oil cooler relocated forward of the cooling fan shroud in their own "doghouse." Dual port heads on a pre- 1971 case will need some different sheet metal, too, so your engine might be a mixture of both types...

1 of 1 people found this helpful.

Your Answer

Beetle

Looking for a Used Beetle in your area?

CarGurus has 8,878 nationwide Beetle listings starting at $1,295.

ZIP:

Volkswagen Beetle Experts

  • #1
    tenspeed
    Reputation
    1,840
  • #2
    Chris Billings
    Reputation
    1,560
  • #3
    Tom Demyan
    Reputation
    1,410
View All

Related Models For Sale

Used MINI Cooper
284 Great Deals out of 10,946 listings starting at $2,000
Used Volkswagen Jetta
626 Great Deals out of 35,563 listings starting at $995
Used Jeep Wrangler
454 Great Deals out of 19,224 listings starting at $2,500
Used Honda Civic
767 Great Deals out of 60,151 listings starting at $950
Used Ford Mustang
571 Great Deals out of 38,809 listings starting at $1,895
Used Volkswagen Golf
104 Great Deals out of 3,786 listings starting at $1,500
Used Toyota Corolla
928 Great Deals out of 63,626 listings starting at $1,850
Used Volkswagen Passat
494 Great Deals out of 26,505 listings starting at $1,500
Used Honda Accord
1,099 Great Deals out of 71,973 listings starting at $1,100
Used FIAT 500
91 Great Deals out of 5,042 listings starting at $3,900
Used Chevrolet Camaro
423 Great Deals out of 31,244 listings starting at $1,450
Used Volkswagen GTI
142 Great Deals out of 6,303 listings starting at $1,490
Used Toyota Camry
1,031 Great Deals out of 85,939 listings starting at $800
Used Volkswagen Eos
47 Great Deals out of 966 listings starting at $3,900
Used Ford Focus
748 Great Deals out of 61,364 listings starting at $900

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.