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10-01-2016, 10:03 PM | #1 |
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crate 350 no oil pressure
Just installed a crate 350 in my truck. Fired it up my mechanical gauge was marking the middle, few minutes later 0 oil pressure. Pick up tube still.looks connected my distributor is making contact. I pulled a valve cover and crank the motor there's no oil pumping up any suggestions?
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10-01-2016, 10:09 PM | #2 |
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Re: crate 350 no oil pressure
Do you have an oil pump priming tool you can use with a drill? I'd try spinning the pump and see what pressure reading you get before you try to fire it up again.
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10-01-2016, 10:18 PM | #3 | |
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Re: crate 350 no oil pressure
Quote:
Sometimes cranking is not enough to see oil at the valves. Use a 1/2" drill with a priming tool. If you feel no resistance at full speed of the drill (it will torque your hand), the oil pump is dead. On the other hand, if you feel resistance, try hooking up another oil pressure gauge. A priming tool on a 1/2" drill will peg the stock gauge, FYI.
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Tom Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
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10-01-2016, 10:51 PM | #4 |
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Re: crate 350 no oil pressure
busted oil pump shaft..... ?
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10-01-2016, 10:53 PM | #5 |
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Re: crate 350 no oil pressure
I'll find me one of those tools and try it out. I stuck a screw driver in there and spun it by hand and I hear the oil gurgling. Buddy mine said if I'm cranking it oil should be spitting up around the valve covers guessing he was wrong on that assumption
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10-01-2016, 11:32 PM | #6 |
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Re: crate 350 no oil pressure
Distributor gear maybe.
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10-02-2016, 12:53 AM | #7 |
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Re: crate 350 no oil pressure
Good suggestion. But won't a broken gear mean it won't run at all since the distributor can't spin? OP says it was running, just 0 oil pressure. Hmmmm... HOWEVER, might be worth a look at the bottom of the distributor shaft to make sure the oil pump drive didn't break off.
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Tom Chevy by day... 1969 Chevy C30 Rollback Tow Truck -- 383 stroker, 4L80E 2011 Chevy Caprice PPV 9C3 6.0L 1995 Chevy Caprice 9C1 1994 Chevy Caprice 9C1 #3 1995 Chevy Caprice Wagon #2 1995 Chevy Impala SS Mopar by night... 1969 Dodge Charger 1972 Chrysler Newport 2dr Hardtop (27K miles) Plus others... |
10-02-2016, 10:54 AM | #8 |
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Re: crate 350 no oil pressure
I took a distributor apart hooked it to a drill nothing pumped up so looks like bad oil pump hopefully I didn't mess anything up with that
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10-02-2016, 11:32 AM | #9 |
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Re: crate 350 no oil pressure
Possible the pickup tube fell off the oil pump. Time to call the engine seller about warranty procedures and troubleshooting suggestions. You don't want to do some test or repair attempt that will let the seller claim you voided their warranty.
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10-02-2016, 12:52 PM | #10 |
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Re: crate 350 no oil pressure
Also possibly oil pressure relief valve is stuck open. Opened up a Jag engine once found half a cotter pin in relief valve. I was a cheap fix for what could have been expensive.
Bob |
10-02-2016, 03:02 PM | #11 |
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Re: crate 350 no oil pressure
Is the oil pump drive shaft ok?
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10-02-2016, 05:16 PM | #12 |
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Re: crate 350 no oil pressure
Here's the kicker I bought this crate motor off a buddy of mine so warranty s out of the picture, I'm just going to replace the pump. The pick up tube is still attached I took a peak through the oil drain hole. Oil drive shaft is attached I don't see any damage. I'll see when I pull the pan
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10-02-2016, 11:14 PM | #13 |
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Re: crate 350 no oil pressure
Just curious , what kind of crate motor is it ?
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10-02-2016, 11:32 PM | #14 |
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Re: crate 350 no oil pressure
It was from a GM dealer. Its got the good old hecho en mexico stamp
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10-02-2016, 11:42 PM | #15 |
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Re: crate 350 no oil pressure
Probably some jalapenos in the oil pan and clogging the oil pick up
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'81 K20 Silverado , '99 Dodge Cummins 4x4, '05 Dodge Cummins 4x4, Pinstriping-Lettering-Specialty Painting |
10-02-2016, 11:53 PM | #16 |
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Re: crate 350 no oil pressure
Wow ok that was little racist
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10-03-2016, 11:08 AM | #17 |
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Re: crate 350 no oil pressure
It was a joke.
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10-03-2016, 11:48 AM | #18 |
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Re: crate 350 no oil pressure
GSP7 might be on the right track. Possible a mouse or bug colony decided the motor was a good home while your buddy had it in storage.
Might be worth pulling the filter and cutting it open. Metal debris points to mechanical failure. Biologic trash indicates a colonization problem. Probably going to have to pull the pan either way but might save the cost of a pump if you find a bunch of bug parts in the filter. |
10-03-2016, 12:40 PM | #19 |
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Re: crate 350 no oil pressure
I gotta lift the motor to pull the pan so I just scored another pump to get it done faster. Crossing my fingers this is the issue. |
10-03-2016, 12:59 PM | #20 |
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Re: crate 350 no oil pressure
Crossed fingers is good. I'd still recommend an oil pump priming tool before you fire it up again.
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10-03-2016, 01:02 PM | #21 |
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Re: crate 350 no oil pressure
Are you going stock replacement, or high volume?
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10-03-2016, 01:59 PM | #22 |
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Re: crate 350 no oil pressure
Weird milky white stuff on bottom of the pan. Can't be good
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10-03-2016, 02:39 PM | #23 |
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Re: crate 350 no oil pressure
moisture from sitting.
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10-03-2016, 02:50 PM | #24 |
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Re: crate 350 no oil pressure
No its assembly lube lol freak me out there lol is there a way to test the old pump
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10-03-2016, 03:14 PM | #25 |
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Re: crate 350 no oil pressure
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