cloop cloop sound from intake
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Junior User
Joined: May 2007
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cloop cloop sound from intake
I recently opened the air cleaner and heard a moderatley heavy clooping sound from the intake. Now I can only here this sound with the lid off. Im guessing it is a bent valve but I also am experienceing low oil pressure from a Autometer electric gauge. It reads zero at idle but I still have oil come though the rockers. It doesn't squirt like I thought it should but I still have oilling. My question is this cloop cloop sound normal? I have checked other motors and heard the sound or is the CDR or maybe rod knock. I am a little nervous because I just disassembled a junk yard 6.9l and found the rod bolts finger tight and was wondering if this is a common problem, should pull my pan and check the bolts?
By the way it is a 1986 F-350 crew, duelly, 4X2, w/ 6.9l, 4-speed, 115K miles.
By the way it is a 1986 F-350 crew, duelly, 4X2, w/ 6.9l, 4-speed, 115K miles.
Elder User
Joined: Jan 2008
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From: Guymon
mine has a loud cloping sound with the intake off at idle. Kinda goes away with throttle. These are noisy engines without the intake and filter on. Although, I don't know how noisy yours is and how long its been making noise. Oil pressure does sure seam low though if your guage is accurate.
Post Fiend
Joined: Nov 2004
Posts: 5,638
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From: Manitoba
Our oil pressures are 10 at hot idle and 40-70 at 3000+rpm......
You will hear the pistons sucking the air in...... a muted woof is normally the case. If an intake valve is the problem.... normally a loud woofing noise is present due to combustion returning to the intake.......
A chuffing noise from the exhaust pipe is a bad exhaust valve.......
You will hear the pistons sucking the air in...... a muted woof is normally the case. If an intake valve is the problem.... normally a loud woofing noise is present due to combustion returning to the intake.......
A chuffing noise from the exhaust pipe is a bad exhaust valve.......
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