So my 90 SC has something going on . Runs , , but has blow by coming out of the oil filler cap, then the fuel PSI , got 42 pounds injectors just checked with a gage today , reads about 35 PSI at just setting there running , give some gas and it jumps to 40-41 , then goes back to 34-35 PSI . When giving it gas a dry black smoke comes out the exhaust . Today we took off the exhaust , just running with the Kooks headers , was thinking maybe the cats were plugged . but that did not show any change .
So someone please tell me on what this could be , I'm in INDIANA , and welcome anyone to stop by and give it a look .
Could it be a bad fuel pump, not sure why it jumps from 34 to 41 PSI . OR a bad ring in the engine
Yet to do a PSI check on the cyl , but I can they that too .
Any reply would help ........Thanks. here or direct to Ballman32@aol.com
So someone please tell me on what this could be , I'm in INDIANA , and welcome anyone to stop by and give it a look .
Could it be a bad fuel pump, not sure why it jumps from 34 to 41 PSI . OR a bad ring in the engine
Yet to do a PSI check on the cyl , but I can they that too .
Any reply would help ........Thanks. here or direct to Ballman32@aol.com