5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

Compression

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Old Aug 26, 2008 | 01:48 PM
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Default Compression

Hi Ive had a couple of problems and was told my compression might be a little low on an older model car(88 gt). My question is if my compression is low what could be my problem and what do I need to do to solve the problem?
Thanks
Old Aug 26, 2008 | 02:50 PM
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Could be a lot of things causing low compression, but why don't you do a compression test first. If you do have low compression on one cylinder, it could be the piston ring or valve seals, neither which you should try to fix if you don't know what you're doing. If compression is low on multiple or adjacent cylinders, could be a head gasket.

Last edited by jman511115; Aug 26, 2008 at 02:54 PM.
Old Aug 26, 2008 | 02:58 PM
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what kind of problems are you having with the car for someone to suggest that you have low compression...how many miles do you have on the car?
Old Aug 26, 2008 | 03:12 PM
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most all drivability problems are related to either vac or spark.
Old Aug 26, 2008 | 06:43 PM
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well if you really think you are having problems then do a compression test
Old Aug 26, 2008 | 07:37 PM
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Originally Posted by nitrous_bob
most all drivability problems are related to either vac or spark.
wow !!!...if I had a quarter for everytime I proved that statement wrong while resolving a drivibility issue then I'd be rich
Old Aug 26, 2008 | 08:59 PM
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Most drivability problems are related to EFI......or the driver. Neener neener.
Old Aug 26, 2008 | 10:04 PM
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Most driveability problems are related to CARB's...

Sorry, just had to do it.
Old Aug 27, 2008 | 07:37 AM
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hey hey hey 5spd you better watch it i have less problems with my car then most people out there and im carbed and its a daily driver
Old Aug 27, 2008 | 08:18 AM
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Originally Posted by HACKGT350
hey hey hey 5spd you better watch it i have less problems with my car then most people out there and im carbed and its a daily driver
you also haven't done anything to it either



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