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#16
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At this point, I would settle the debate by buying a Honda S2000.
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#17
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when you do a compression test you disable the fuel supply. Having fuel being shot in the combustion chamber during a compression test will give you false readings, try it sometime. Do a compression test with the fuel pump or fuel injection enabled and with it disable. Only time you have to put any liquids in the combustion chamber is when you have a really low reading. Some of you obivously havent learned the right way to do a compression test.
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1986 300SDL, 211K,Dealership serviced its whole life 1991 190E 2.6(120k) 1983 300D(300k) 1977 300D(211k) |
#18
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This is the first I have heard of fuel in the chamber causing false readings. I have no problem with disabling the fuel pump, but I have always heard that testing with the throttle closed will give a false low reading. I tried it with my present Miata and found 15 to 20# low with the throttle closed.
I can imagine if you had enough fuel in there it could wash the oil off the cylinder walls and give a false low reading though.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#19
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The dealer said
198 factory, 146 psi minimum.
I feel I must assume the car in question's motor needs going through. I believe it must have seen extensive track time somewhere along the line.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
#20
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Finding numerous references to #3 and/or #4 cylinders giving low compression readings after running under forced induction....... FWIW.
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1961 220b: first project car - sold. 2000 CLK 430: first modern Benz - sold. 2001 CLK 55: OMG the torque!!! - sold 1972 280SE 4.5: Baby Gustav 1991 300TE 4Matic: Gretel the Snow Bunny - sold 1978 300SD: Katz the Free Man - given away 1980 Redhead: Darling Wife |
#21
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Oh, I didn't mention I got those figures from the service department of the local Mazda dealer.
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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC] ..I also have a 427 Cobra replica with an aluminum chassis. |
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