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Author Topic: well i got it back out of the garage  (Read 1490 times)

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bexandpower

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well i got it back out of the garage
« on: 29 November 2006, 17:57:35 »
Just to say a big thanks to everyone that has helped so far you have all been great and really helped us in this time of need.

Ok got me omega back today as the garage are now completely confused. Since the first time they tried to give me the car back they have:

Cleaned the idle valve
replaced the plugs
done a compression test (All ok though a little low on the first cylinder)
Topped up the oil (have slight rocker leak)
and done an emissions test.

the problem is the car still gives you a rocking sensation when idling at low RPM (when in drive for instance). I asked if they had checked the timing againand they said yes, I am also getting a tappet rattle from the top end are these two linked??? Is there a major problem with my engine???? does anyone know anything that may help??????????
« Last Edit: 29 November 2006, 20:18:49 by bexandpower »
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bexandpower

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Re: well i got it back out of the garage
« Reply #1 on: 29 November 2006, 20:17:37 »
Just another quick addidtion. When they did the compression test they said that cylinder 1 was a little low but this could be an old ring causing bad compression. I was just wondering could this be a sticky or bent valve causing this?
« Last Edit: 29 November 2006, 20:17:59 by bexandpower »
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STMO123

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Re: well i got it back out of the garage
« Reply #2 on: 29 November 2006, 20:35:29 »
You're not getting a lot back on this one mate. Got to admit, its beyond me :-?
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bexandpower

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Re: well i got it back out of the garage
« Reply #3 on: 29 November 2006, 21:21:22 »
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You're not getting a lot back on this one mate. Got to admit, its beyond me :-?

you and me both mate. If the compression was down on one of the pistons i.e. piston 1 could this be a valve fault.
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TheBoy

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Re: well i got it back out of the garage
« Reply #4 on: 29 November 2006, 21:39:00 »
Knowing whats happened, my initial reaction woul dbe bent valve....
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Del Boy

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Re: well i got it back out of the garage
« Reply #5 on: 29 November 2006, 21:50:12 »
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You're not getting a lot back on this one mate. Got to admit, its beyond me :-?
Me 3 m8
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bexandpower

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Re: well i got it back out of the garage
« Reply #6 on: 29 November 2006, 22:24:21 »
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Knowing whats happened, my initial reaction woul dbe bent valve....

Yeah i was thinking bent valve mech says it could be a weak piston ring I have put up another post asking if there is any way to tell the difference without taking the head off.
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rpont

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Re: well i got it back out of the garage
« Reply #7 on: 29 November 2006, 23:00:24 »
Drop a teaspoon of oil into the piston. If it's a ring it'l go up and if it's a valve it won't. That's the theory anyway but if it's a V engine (can't remember now I'm here) the piston isn't level so it might not seal all of the way around the ring and it could splash on a valve I suppose.

Has anyone done this test on a v6 and got useful results?
« Last Edit: 29 November 2006, 23:01:18 by rpont »
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bexandpower

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Re: well i got it back out of the garage
« Reply #8 on: 29 November 2006, 23:08:42 »
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Drop a teaspoon of oil into the piston. If it's a ring it'l go up and if it's a valve it won't. That's the theory anyway but if it's a V engine (can't remember now I'm here) the piston isn't level so it might not seal all of the way around the ring and it could splash on a valve I suppose.

Has anyone done this test on a v6 and got useful results?

can i do this without removing the head? if so how?
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theolodian

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Re: well i got it back out of the garage
« Reply #9 on: 29 November 2006, 23:16:28 »
Quote
Quote
Drop a teaspoon of oil into the piston. If it's a ring it'l go up and if it's a valve it won't. That's the theory anyway but if it's a V engine (can't remember now I'm here) the piston isn't level so it might not seal all of the way around the ring and it could splash on a valve I suppose.

Has anyone done this test on a v6 and got useful results?

can i do this without removing the head? if so how?
Yeah, that's the idea.  Do a compression test, take the tester out, squirt in some oil through spark plug hole, test again, compare readings.
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