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what happens when your oil pump goes out?
Posted 24 December 2003 - 04:27 PM
I towed it home.
I thought the engine was toast.
It started the next day to my surprise.
I immiediatly shut it off.
The camshaft had hardly any oil on it.
Loss of oil pressure was one of the symptoms just previous to the break down.
My suspicions are the oil pump.
What do you think?
Posted 25 December 2003 - 06:14 AM
Originally posted by TomoHawk
When you lose all oil pressure, a pressure switch closes(opens?) and it turns off the e.c.u., stopping the engine.
Not sure, but if he has a carbed Z then there is no ECU. Not sure if one on a 280 would cut it off or not. Never heard of that:ermm:
Four Forty-Six Photography
Off my meds and wanting a Z again.
Previous owner of a '72 which the wife made me get rid of....Got rid of her, now I want the car back!!
Posted 25 December 2003 - 10:57 AM
The oil pressure wasn't totally gone at one point is was.
I contined on for a bit before i pulled over and it was running really low. The engine did cut off though once it went to idle.
I wonder if it sensed loss of oil pressure and cut it off.
Tomohawk: Do you know where i could find that info?
Posted 29 December 2003 - 04:28 AM
Your car may have died at idle due to increased friction caused by lack of lubrication. The BHP at 700 rpm is not alot.
Please don't run anymore "tests" until you pull the pump (easy to get at from below) and turn input shaft by hand. Any "sticky" spots, grinding noise, or other than smoooooth and free movement should send you to the local parts counter pronto.
If you have an oil pressure gage, you should see AT LEAST 10 lbs at idle, and AT LEAST 30 lbs when you blip the throttle. If you haven't seen these figures there is something terribly wrong!
Drain your oil pan and replace your filter. Examine the waste oil for anything unusual. A clogged filter with a stuck bypass valve can also starve an engine.
After you have fixed or eliminated various problems, then pull your distibuter and use an old dis. shaft in a power drill to spin the oil pump. Have a friend verify that your oil pressure gage shows suitable pressure (turn ignition to run). Reassemble dist. and start engine. If oil gage doesn't read well kill engine immediately.
In worst case you may have an internal oil leak (bad rod bearing, bad gasket from pick up to block, or other) that requires a rebuild.
best wishes and good luck,
Posted 29 December 2003 - 11:24 AM
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