I
interprosystems
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"i have a 1981 cobalt w/ a 260
"i have a 1981 cobalt w/ a 260 mercuiser v8 engine. i recently had the heads replaced & she runs like a top. one problem though: oil pressure is low, like at 25 psi regardless of rpm. owners manual says it should be 30-55 psi. @ 2k rpm. oil pressure gauge & sender were recently replaced so i dont think they are mis- reading. engine runs strong & cool - approx. 130 degrees.
could the oil pump be failing?? if so, what is required to replace it?? pull motor?? yikes.
any other options ideas?? any way to check to see if oil gauge is reading properly? or if oil pressure is actually ok??
thanks."
"i have a 1981 cobalt w/ a 260 mercuiser v8 engine. i recently had the heads replaced & she runs like a top. one problem though: oil pressure is low, like at 25 psi regardless of rpm. owners manual says it should be 30-55 psi. @ 2k rpm. oil pressure gauge & sender were recently replaced so i dont think they are mis- reading. engine runs strong & cool - approx. 130 degrees.
could the oil pump be failing?? if so, what is required to replace it?? pull motor?? yikes.
any other options ideas?? any way to check to see if oil gauge is reading properly? or if oil pressure is actually ok??
thanks."