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#1
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OT: MR2 problem.
Here's a copy of the post I just wrote on the MR2OC. If you have nay advice to offer, I'd appreciate hearing it.
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2005 RX-8 Grand Touring 2005 Outback 2002 Mercedes-Benz E320 wagon END OF LINE |
#2
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Head gasket probable...Cylider rings or Valves Most Likely... If it is the valve then do the guides and springs while you have them out. Rings well thats a full on rebuild type job....one other thought cracked head(not likely).
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86 GMC Jimmy Blue and Silver- R.I.P. 87 Integra RS ~228k miles R.I.P. 92 SVX LS-L Perly ~186k R.I.P. 89 240sx se red ~165k miles Gone and unknown 89 240sx se Black~185k R.I.P. 85 Toyota pickup ~205k R.I.P. 85 BMW 325e ~ Gone and unknown 85 Ford Mustang getting engine swap now! 05 Colorado ~108k Daily Driver |
#3
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Yep, those are all possibilities I have considered. The head gasket was replaced less than a year ago, but I see no mention of the head being machined or whether or not it needed it..
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2005 RX-8 Grand Touring 2005 Outback 2002 Mercedes-Benz E320 wagon END OF LINE |
#4
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Normal progression at this point: Go back and check another cylinder to ensure you didn't pick up a piece of crud in the guage's schrader valve. Next step is to pour a couple ounces of oil in number 4 through the spark plug hole and re-check. If it now pumps air you have a ring problem otherwise valve or head gasket. Now if you suspect head gasket, a cylinder that has 0 compression would be pumping a lot of air into either the crankcase or cooling system. With the radiator cap off you would see a lot of bubbles. If into the crankcase you would have a lot of oil pushed out past gaskets and seals.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) |
#5
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Thanks Beav the head gasket/ring trouble shoot it. Oh and I replaced the head gasket on my Teg and less than 2 months later had to replace it again because the head was slightly warped 15 minutes and a large file in the drive way took the new head and gasket till the bottom end went out.
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86 GMC Jimmy Blue and Silver- R.I.P. 87 Integra RS ~228k miles R.I.P. 92 SVX LS-L Perly ~186k R.I.P. 89 240sx se red ~165k miles Gone and unknown 89 240sx se Black~185k R.I.P. 85 Toyota pickup ~205k R.I.P. 85 BMW 325e ~ Gone and unknown 85 Ford Mustang getting engine swap now! 05 Colorado ~108k Daily Driver |
#6
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Quote:
Other than that, I don't see other signs of a bad head gasket. No oil in the coolant and no coolant in the oil. No bubbles in the coolant, either, and I just had to go through the coolant bleeding procedure so I definitely would have seen it there.
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2005 RX-8 Grand Touring 2005 Outback 2002 Mercedes-Benz E320 wagon END OF LINE |
#7
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Try putting all the plugs back in and cranking the engine while holding your hand or a piece of paper over the oil fill (cap off, duh.) Excess case pressure will blow the paper off or you'll be able to feel the pulse, depending on which you do.
The head is the hottest part of the engine, besides the exhaust manifold. If it has overheated the cam seals catch hel , harden and leak.
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ASE Certified Master Automotive Technician w/L1. ASE Certified Master Medium/Heavy Truck Technician. Certified EVT (Emergency Vehicle Technician) Last edited by Beav; 03-20-2005 at 08:27 PM. |
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