Bent valve?
#1
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Join Date: Nov 2004
Location: Boston, Ma, U.S.A
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Bent valve?
Hit the juice yesterday and a whiteish cloud of smoke came out of my exaust, my car was running on 3 cyl. I had a flashing check engine, took out the plugs, my 3rd cyl. plug was black and had the tip blown off, the 3rd cyl. reads 0 psi on the compresson test, when you put psi in the 3rd cyl. air leaks out of the 1st cyl. Blown valve(s)? blown rings?
#7
Re: (Ben_si)
The crankshaft is designed so that the pistons in cylinders 1 and 3 move in sync. So when 1&3 are decompressed, pistons 2&4 are compressing. Most likely when you did a leak down you had the pistons decompressed which allows air from on cylinder to enter the camber of the other cylinder housing
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