Could a VERY rich tune eat up crank bearings?
04-09-2008, 01:45 AM
#1
Could a VERY rich tune eat up crank bearings? My car was tuned very rich last time around; so much that I did a flyby past my friends car and they had to pull over because they couldn't see- they had their windows UP and the fumes went through the vent and into the car blinding them- they looked like they had been crying from cutting onions. I ALWAYS smelled like fuel from driving it even when just cruising. I couldn't even drive it to work because I would wreak from ten feet away.
Anyway, eventually my car wouldn't get oil pressure. I pulled the motor and the crank bearings were ate up real bad. Could unburnt fuel have made its way into the oil pan and washed the bearings off?
Anyway, eventually my car wouldn't get oil pressure. I pulled the motor and the crank bearings were ate up real bad. Could unburnt fuel have made its way into the oil pan and washed the bearings off?
04-09-2008, 01:47 AM
#2
most definately, too much fuel in the cylinders will wash down the cylinder walls and the rings wont seal, causing excessive blow by and fuel in the crankcase, greatly changing the viscosity of the oil, to the point it will flow too freely and not build pressure, ending up in spun bearings.
04-09-2008, 06:30 AM
#3
most definately, too much fuel in the cylinders will wash down the cylinder walls and the rings wont seal, causing excessive blow by and fuel in the crankcase, greatly changing the viscosity of the oil, to the point it will flow too freely and not build pressure, ending up in spun bearings.
04-09-2008, 11:38 AM
#7
no, something you have to realize, is your not going to see fuel contamination on the dip stick. your only getting blow by, which is just excess fuel vapors making it past the rings. the fuel is already atomized with air, so its going to be a very negliagle amount quantity wise, and what we are used to, (there isint going to be gallons of gas in your oil), but i beleive they measure fuel contamination in PPM, if im not mistaken. it doesnt take much of any contaminate to break down the oil to the point where it wont protect.
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04-09-2008, 12:43 PM
#8
only time i've seen enough gas in the oil to cause a problem it was noticeable on the dipstick. granted it was a gen 1 motor, i believe the same principles apply. regardless, upon checking your oil regularly, you will notice something, be it discoloration, odor, etc...that is my point.
04-09-2008, 01:08 PM
#9
so its going to be a very negliagle amount quantity wise, and what we are used to, (there isint going to be gallons of gas in your oil), but i beleive they measure fuel contamination in PPM, if im not mistaken. it doesnt take much of any contaminate to break down the oil to the point where it wont protect.
I agree, that is why I suggested used oil analysis. If its on the dipstick, its called a bomb!!!!!!!!!!!!
04-09-2008, 03:55 PM
#10
only time i've seen enough gas in the oil to cause a problem it was noticeable on the dipstick. granted it was a gen 1 motor, i believe the same principles apply. regardless, upon checking your oil regularly, you will notice something, be it discoloration, odor, etc...that is my point.
04-12-2008, 08:33 PM
#11
it would idle in the 10's instead of 14.7-15.0. WOT pulls were fine- 11.0-11.5, remember this is a turbo car. Oh, I never even got around to changing the oil. Motor only had 1000miles on it if that. I changed it at 20miles, 100miles, 500miles and that was it. I never noticed a fuel smell to the odor or 'more oil'.
