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  #1  
Old 10-22-2013, 06:51 PM
Airfuel369 Airfuel369 is offline
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Default Knock tap ping on start up and high rpm under load

I have a 95 ford ranger 2.3. Haveing a problem at startup low oil pressure for 6 to 7 sec then runs normal until 3rd gear and up at high rpm pings and knocking noise any ideas??? Have dropped oil pan and checked pick up tube nothing cloging it. Could it be pump or tapets ???
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Old 10-22-2013, 08:37 PM
stateranger stateranger is offline
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Default Re: Knock tap ping on start up and high rpm under load

You need to do an oil pressure test.
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Old 10-23-2013, 08:37 AM
tomboy tomboy is offline
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Default Re: Knock tap ping on start up and high rpm under load

While you had the pan off, you should've pulled the rod caps and looked at the inserts, sounds like time to replace them, maby the mains too.
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Old 10-23-2013, 04:03 PM
Airfuel369 Airfuel369 is offline
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Default Re: Knock tap ping on start up and high rpm under load

Pressure is 40 after noise at start up and 60 at high rpm. Lower bearings looked good
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Old 10-23-2013, 04:11 PM
low2.3 low2.3 is offline
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Does it do it very light throttle while maintaining constant speed?
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Old 10-23-2013, 04:39 PM
JZ1973 JZ1973 is offline
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Default

Had same issue once with a supertech oil filter on it. Changed filter leveled off oil noise disappeared.

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Old 10-23-2013, 05:58 PM
Airfuel369 Airfuel369 is offline
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Default Re: Knock tap ping on start up and high rpm under load

Make like what sounds like valve noise at high rpm under load and there is no carbon build up and egr valve is clean it is not spark knock I know that much.
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  #8  
Old 10-23-2013, 06:04 PM
1993ranger4x4 1993ranger4x4 is offline
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How many miles are on it?

1993 Ford Ranger STX 4x4 4.0L 5spd manual
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  #9  
Old 10-23-2013, 06:13 PM
Airfuel369 Airfuel369 is offline
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Default Re: Knock tap ping on start up and high rpm under load

103xxx
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