Hi,volkswagen beetle compression on one cylinder is low

80

Asked by Andy Jul 17, 2015 at 07:31 AM about the 1974 Volkswagen Beetle

Question type: Maintenance & Repair

Hello again,you have been so helpfully, it's great. I have a 1974 volkswagen super
beetle,it hasn't been running in 9 yrs,just started up once a month. The compression on
one cylinder is 60 . I was told the valves may be sticking, and if I use it for awhile it may
get better and the compression will return yo normal. Is there any truth in this statement?
Do I need a motor job?

6 Answers

80

Thank you very much ,you guys are a great help

5 people found this helpful.
44,755

No harm in running it for awhile- maybe the rings got corroded and will get better- maybe not- amazing that it still runs after 9 years of sitting- you may need more work than that-

1 people found this helpful.

NO one considers the Thermostat on an air-cooled engine...it is located on the external sheetmetal duct to block the air to necessitate rapid starting...in a COLD environment will notice it malfunctioning...a '74 probably has one but is so corroded air simply does never get to it's job of keeping the cylinders cool, as every air-cooled engine owner knows the number 3 cylinder is the first to go because the OIL COOLER is located above it...folks often MOVE the location so this does not happen~ yes, I would bet the Number 3 is the devil~ ...although as jamnblues has said, make sure the hydraulic valves are adjusted correctly~

60

hi i have a 1970 vw beetle the # 3 piston no compression adjust the valves end re - check the compression still doesnt have the compression # 3 some trick to fix mi vw beetl ???? thanks

5 people found this helpful.

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