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

475

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

2 out of 2 people think this is helpful.
655

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 out of 2 people think this is helpful.
185

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 out of 1 people think this is helpful.

Your Answer

Add photo

Related Questions

Beetle

Looking for a Used Beetle in your area?

CarGurus has 8,362 nationwide Beetle listings starting at $1,200.

ZIP:

Search Volkswagen Beetle Questions

Volkswagen Beetle Experts

#1 tenspeed
tenspeed
Reputation 1,560
#2 Chris Billings
Chris Billings
Reputation 1,470
#3 Tom Demyan
Tom Demyan
Reputation 1,170
View All

Related Models For Sale

Used MINI Cooper
220 Great Deals out of 11,492 listings starting at $2,495
Used Volkswagen Jetta
332 Great Deals out of 33,914 listings starting at $700
Used Jeep Wrangler
285 Great Deals out of 19,017 listings starting at $3,295
Used Ford Mustang
332 Great Deals out of 45,523 listings starting at $2,000
Used Honda Civic
481 Great Deals out of 81,844 listings starting at $558
Used Honda Accord
697 Great Deals out of 83,200 listings starting at $500
Used Volkswagen Passat
176 Great Deals out of 21,458 listings starting at $1,450
Used Volkswagen Golf
27 Great Deals out of 2,276 listings starting at $1,900
Used Toyota Corolla
759 Great Deals out of 74,632 listings starting at $1,991
Used FIAT 500
65 Great Deals out of 6,539 listings starting at $3,595
Used Volkswagen GTI
90 Great Deals out of 5,877 listings starting at $2,000
Used Ford Focus
530 Great Deals out of 55,277 listings starting at $1,495
Used Chevrolet Camaro
148 Great Deals out of 34,915 listings starting at $1,995
Used Volkswagen Eos
24 Great Deals out of 674 listings starting at $3,987
Used Kia Soul
256 Great Deals out of 28,456 listings starting at $3,995