2006 Volvo 5.7 osi-d crank no start

alldodge

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Thanks guys, back into it today after a break. Would the low compression, if stuck valve, cause the MAP or other sensors to prevent ( protect ) the motor starting. Also, is it at all possible timing is out given I had it running fine a short time ago and I havent removed the distributor ? I hear of motors "jumping a tooth" ??

Two dead cylinders would be an issue with unburned gas out the exhaust, but it isn't the reason it won't start. There is something else going on

PS, the Volvo techs here want to pull the motor to do these tests which seems a major thing to do to test this stuff. $4000.00 !!

It just makes it easier, and if I was willing to spend 4K to find out what's wrong, might as well get someone to rebuild with guarantee cost of a running motor.

Maybe carb motor drop in
 

woodsy01

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Two dead cylinders would be an issue with unburned gas out the exhaust, but it isn't the reason it won't start. There is something else going on



It just makes it easier, and if I was willing to spend 4K to find out what's wrong, might as well get someone to rebuild with guarantee cost of a running motor.

Maybe carb motor drop in
and the "jumped tooth" timing scenario AD what do you think ?
 

Tail_Gunner

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Personally I like a 1x1 block of wood and a 2lb hammer. Heavy taps and never allow the hammer to tap anything that is metal... If your somewhat lucky they will break loose.

But first pull the pushrods and check for any distortions...If there bent Ohh well. Been there done that.
 
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woodsy01

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Personally I like a 1x1 block of wood and a 2lb hammer. Heavy taps and never allow the hammer to tap anything that is metal... If your somewhat lucky they will break loose.

But first pull the pushrods and check for any distortions...If there bent Ohh well. Been there done that.
would that guide being stuck affect compression readings ? trying to understand why 3 and 5 are low, could be as AD suggested and a head gasket however pressure came up a bit when I put oil in, but I probably put too much oil in ie a tablespoon in each cylinder.
 

Tail_Gunner

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would that guide being stuck affect compression readings ? trying to understand why 3 and 5 are low, could be as AD suggested and a head gasket however pressure came up a bit when I put oil in, but I probably put too much oil in ie a tablespoon in each cylinder.

Don't over think this, what has happened is over its done.

Alldodge is quite correct in his assumptions head gaskets a highly suspect just as valves are.

You stated this engine was a hard start when hot, that is not a good thing. The first thing that comes to mind is the timing chain did jump, over advancing the timing perhaps? That will cause the starter to bind during a hot start


Now pulling the valve covers and checking for stuck valves is a short cut. If they are stuck open..you can breath a bit. If you can jar them loose relatively easy breath even deeper.

Next stop measure the compression if it's back up to say 135 you may have gotten lucky.

If they are not stuck well it's time to find a new engine I believe. Bad timing chain? Cracked head? Blown head gasket? It could any one of those issue's

Ive been in your shoes several times, one time I got lucky..
 
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woodsy01

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Don't over think this, what has happened is over its done.

Alldodge is quite correct in his assumptions head gaskets a highly suspect just as valves are.

You stated this engine was a hard start when hot, that is not a good thing. The first thing that comes to mind is the timing chain did jump, over advancing the timing perhaps? That will cause the starter to bind during a hot start


Now pulling the valve covers and checking for stuck valves is a short cut. If they are stuck open..you can breath a bit. If you can jar them loose relatively easy breath even deeper.

Next stop measure the compression if it's back up to say 135 you may have gotten lucky.

If they are not stuck well it's time to find a new engine I believe. Bad timing chain? Cracked head? Blown head gasket? It could any one of those issue's

Ive been in your shoes several times, one time I got lucky..
well guys, thought I'd buy a new distributor to rule it out, the other I tried was second hand but supposed to be ok. fired up first pop and running ok it seems, didnt go out on the water this evening. I'll have to investigate the low compression I guess but I'm a bit happier today. Thank you all for your input, it is appreciated.
 

QBhoy

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well guys, thought I'd buy a new distributor to rule it out, the other I tried was second hand but supposed to be ok. fired up first pop and running ok it seems, didnt go out on the water this evening. I'll have to investigate the low compression I guess but I'm a bit happier today. Thank you all for your input, it is appreciated.
Very common story these days. I always go on about it, as most will know.
As for the compression…first thoughts would be that being next to each other…head gasket would be suspect. Small tiny chance…tiny…that you have low compression as a result of fuel washing down the cylinders. Not so sure though.
 

woodsy01

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Very common story these days. I always go on about it, as most will know.
As for the compression…first thoughts would be that being next to each other…head gasket would be suspect. Small tiny chance…tiny…that you have low compression as a result of fuel washing down the cylinders. Not so sure though.
If a head gasket would I not get steam from exhaust when running on a cradle or is it not like a car given water cooled exhaust ? You don’t think a stuck valve maybe ? Def no smoke from exhaust on start or when running. Seems to be running about 95% right I feel
 

ripjmk

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No, on a marine IO exhaust, steam is not an indication of head gasket failure. You changed the manifolds and risers two years ago, did you use OEM gaskets? I ask as a weeping riser gasket can cause moisture in the exhaust manifold and lead to valve stem rusting during lay up periods. This can cause exhaust valves sticking, more so on the middle cylinders. I'd test the boat on the water and if all seems good put 20 hours on it and redo the compression test. And in any case, at the end of the season pull and replace the risers and maybe the manifolds to replace the gaskets and machine the mating surfaces if necessary.
 

QBhoy

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If a head gasket would I not get steam from exhaust when running on a cradle or is it not like a car given water cooled exhaust ? You don’t think a stuck valve maybe ? Def no smoke from exhaust on start or when running. Seems to be running about 95% right I feel
Just a bit of a coincidence that your two low cylinders are next to each other.
 

woodsy01

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No, on a marine IO exhaust, steam is not an indication of head gasket failure. You changed the manifolds and risers two years ago, did you use OEM gaskets? I ask as a weeping riser gasket can cause moisture in the exhaust manifold and lead to valve stem rusting during lay up periods. This can cause exhaust valves sticking, more so on the middle cylinders. I'd test the boat on the water and if all seems good put 20 hours on it and redo the compression test. And in any case, at the end of the season pull and replace the risers and maybe the manifolds to replace the gaskets and machine the mating surfaces if necessary.
Yes, used OEM risers manifolds and gaskets and did by the book with torque etc. got 12 yrs off last set And relatively mint when I pulled them, the neutrasalt flush must work ok. It’s our summer now so will do as you suggest. Is there much point in adding an engine flush or similar product to loosed things up ? Thanks
 

ripjmk

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Feb 26, 2019
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Yes, used OEM risers manifolds and gaskets and did by the book with torque etc. got 12 yrs off last set And relatively mint when I pulled them, the neutrasalt flush must work ok. It’s our summer now so will do as you suggest. Is there much point in adding an engine flush or similar product to loosed things up ? Thanks
I don't think there would be any benefit to adding anything, but that just my feeling, others here might have a different opinion. Has anyone had good results from engine flush additives?
 
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