1986 Pontiac Fiero 2 Cylinders no pressure, car starts, dri

1986 PONTIAC FIERO
105,000 MILES • 6 CYL • 2WD • MANUAL
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RANSOMNATOR
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I have a stock 1986 2.8L motor that has 2 cylinders with no pressure, the car starts and is driveable but with sluggish performance and brutal gas mileage. The car exhaust has a very strong smell of gasoline and there is an intermittent engine code 45 (rich exhaust at 02 sensor). I'm under the impression that the cylinders are not siezed as if that were the case the car would not be driveable. I've been told by a mechanic that to adjust the tappets I would have to drop the engine (I cant remember which cylinders have no pressure but I do remember being told the two in question are inaccessable), is it possible to adjust them without dropping the engine? -- through backyard mechanic magic?
Oct 20, 2009 at 7:04 PM
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DOCFIXIT
  • ASE Certified Mechanic
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Valves are hydraulic no adjustment. Think you should do dry & wet compression test to determine valves or cylinder/ring damage.
Oct 21, 2009 at 1:09 PM
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