| Author |
Message |
    
Don
Member
Username: in2fishn
Post Number: 22
Registered: 01-2009
| | Posted on Monday, October 12, 2009 - 02:16 pm: | 
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I have a 2001 VP 5.7 GXI with 847 hrs. I noticed that it started using oil. I have checked the engine for oil leaks and I can’t find any. The bilge is clean. I used a qt if oil in 50 hrs. There is no smoke when I start the engine. What might be the cause of oil usage? At 25 hrs I added 8 oz, 17 hrs added 8 oz, 8 hrs added 6 oz and 8 hrs 6 oz. Ran the boat yesterday 2 hrs and its down approx. 6 oz |
El Pescador
Senior Member
Username: el_pescador
Post Number: 4985
Registered: 02-2006
| | Posted on Monday, October 12, 2009 - 03:40 pm: |
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If compression is good and you have no piston rings problems, perhaps it is time to replace the valve stem seals (part 18).
http://www.volvopentastore.com/Camshaft_and_Valve_Train/dm/cart_id.375112389--se ssion_id.055601878--store_id.366--view_id.322347 |
Don
Member
Username: in2fishn
Post Number: 23
Registered: 01-2009
| | Posted on Monday, October 12, 2009 - 04:50 pm: |
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With a leaking valve seal won't you get smoke on engine start? Did a comprression test last year an it was within limits. I'll go back and do the test again |
El Pescador
Senior Member
Username: el_pescador
Post Number: 4988
Registered: 02-2006
| | Posted on Monday, October 12, 2009 - 07:37 pm: |
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With worn valve seals (when you notice oil consumption it is usually more than one seal that leaks) the oil will be sucked into the intake manifold slowly but surely while the engine is running and it has warmed-up. Most times you won't notice any smoke at start time unless the leak is severe. However, if you remove the intake manifold you would see through the intake port if the valves are fouled with charred oil residues. |
Don
Member
Username: in2fishn
Post Number: 24
Registered: 01-2009
| | Posted on Tuesday, October 13, 2009 - 03:48 pm: |
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Did a compression test today. All cylinders checked ok. Got reading as high as 180 psi and the lowest being 165. 170 -175 for the rest of the cylinders. I’ll be pulling the heads over the winter and replace the valve seal.
How hard is it to replace the Gimbel Bearing? Noticed it was making noise when I turned to port or starboard. Was ok when going straight. 5.7GXI DP Transom shield assembly SX-MPH |
El Pescador
Senior Member
Username: el_pescador
Post Number: 4990
Registered: 02-2006
| | Posted on Tuesday, October 13, 2009 - 04:45 pm: |
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Check this
http://dc101.4shared.com/download/50982625/e2bdb42c/SX_DP-S_Service_Manual.pdf |
Don
Member
Username: in2fishn
Post Number: 25
Registered: 01-2009
| | Posted on Tuesday, October 13, 2009 - 04:58 pm: |
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Thanks for the link. Do you have other links for VP Manuals? |
El Pescador
Senior Member
Username: el_pescador
Post Number: 4991
Registered: 02-2006
| | Posted on Tuesday, October 13, 2009 - 05:15 pm: |
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Just the one for the AQ series drives.
http://www.mybayliner.co.uk/boatmad/280285290.pdf
Normally, I do fine with Seloc and the VP owners' manuals. |
JUST-IN-TIME
Senior Member
Username: justintime
Post Number: 6986
Registered: 09-2006
| | Posted on Wednesday, October 21, 2009 - 09:39 pm: |
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most motors will burn a quart at 20hrs |
