12A Metering Oil Pump
10-03-01, 08:25 PM
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12A Metering Oil Pump
I have an oil leak and I suspect it is coming from the metering oil pump. It is flowing onto the thermal reactor and smoking really bad. A few weeks ago I had the hoses off, so it may just be that.
I took off the hoses, tried to clean them out, and they are hard to blow through. Is this normal or should more flow through? I am also having a very hard time finding some new spring hose clamps.
After adjusting the control arm and reassembling, I decided to measure the oil output volume. After waiting for 5 minutes or more at various RPMs, no oil came out. Does it take a few minutes to start pumping oil?
Also, where exactly is the oil output adjustment on the pump? I may need to adjust.
Thanks guys, just waiting to come across a 13B Turbo and trans!
I took off the hoses, tried to clean them out, and they are hard to blow through. Is this normal or should more flow through? I am also having a very hard time finding some new spring hose clamps.
After adjusting the control arm and reassembling, I decided to measure the oil output volume. After waiting for 5 minutes or more at various RPMs, no oil came out. Does it take a few minutes to start pumping oil?
Also, where exactly is the oil output adjustment on the pump? I may need to adjust.
Thanks guys, just waiting to come across a 13B Turbo and trans!
10-03-01, 08:52 PM
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Check out www.mazspeed.com
Click on 'Facts' and there is a really good section on the OMP.
I think what you're experiencing is a common failure. They either seize open or closed, or they start to leak.
PS - If your OMP isn't pumping oil, I hope you're premixing. Cause if not, you might need that 13B sooner that you think!!
Click on 'Facts' and there is a really good section on the OMP.
I think what you're experiencing is a common failure. They either seize open or closed, or they start to leak.
PS - If your OMP isn't pumping oil, I hope you're premixing. Cause if not, you might need that 13B sooner that you think!!
10-04-01, 01:18 AM
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You want about 4-6 oz per tank. Use MMO (Marvel Mystery Oil) if you can find it. It comes in a red bottle in the fuel additive section of automotive stores. If you can't find it then a good pre-mix synthetic for water cooled engines.
Hell adding MMO isn't a bad idea even if your OMP works.
Hell adding MMO isn't a bad idea even if your OMP works.
Last edited by smnc; 10-04-01 at 01:26 AM.
10-04-01, 01:44 AM
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Hey, like I said my OMP works and I haven't done this, but I don't think you should use synthetic oil as a premix, because it doesn't burn cleanly. I'd just go with the regular stuff.
I do add a bottle of MMO in with the gas every once in a while though
I do add a bottle of MMO in with the gas every once in a while though
10-04-01, 02:35 AM
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Silver,
I think you misunderstood me. There are Sythetic pre-mix oils designed to burn cleanly. They're designed for things like snowmobiles, jetskis, etc. In fact most of 'em burn cleaner than fosil oils.
Also, you don't need a full bottle of MMO for a tank (tho it won't hurt). I use roughly half a bottle in each tank, although about once a month I use a full bottle.
I think you misunderstood me. There are Sythetic pre-mix oils designed to burn cleanly. They're designed for things like snowmobiles, jetskis, etc. In fact most of 'em burn cleaner than fosil oils.
Also, you don't need a full bottle of MMO for a tank (tho it won't hurt). I use roughly half a bottle in each tank, although about once a month I use a full bottle.
Last edited by smnc; 10-04-01 at 02:41 AM.
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10-04-01, 03:03 AM
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SMNC,
Ya learn something new everyday
Sorry, guess I read your post a little hastily.
Nothin like surfin the forum at 4am, eh? Dude I seriously gotta learn how to sleep lol
Ya learn something new everyday
Sorry, guess I read your post a little hastily.Nothin like surfin the forum at 4am, eh? Dude I seriously gotta learn how to sleep lol
10-04-01, 06:34 AM
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I can see my OMP pulling the oil up the hose within about 3 minutes of starting the engine but than again my pump only has on about 15k on it along with new hoses.
10-04-01, 10:48 AM
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Silver
I know what you mean. I'm lucky if I can rember my own name after 3am, lol.
And hey, it was an easy mistake to make.
Still MMO is the oil of chioce.
And hey, it was an easy mistake to make.
Still MMO is the oil of chioce.
10-04-01, 09:50 PM
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Upon further investigation I discovered that it is pumping, but I don't think it is pumping enough. It still leaks so I just went and pulled one from a junk '85, I figure I'll just throw that in and try to get a good hose connection. Those skimpy spring clamps are pathetic! Also, where exactly is the output adjustment? Sources say "on the omp/lever." The only thing I see is a nut that looks like it holds the lever on. Man!
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