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Author Topic: Engine noise, terminal?  (Read 63009 times)

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Kevin Wood

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Re: Engine noise, terminal?
« Reply #585 on: 12 April 2010, 10:36:20 »
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I think checking the oil pressure is the next move - before it's driven hard, just in case.

To that end, if the thread's the same, you are welcome to borrow the pressure gauge off the Westfield for a while? Just thinking it can be chucked on top of the dash so you can keep an eye on it while driving.

Kevin
In a tunnie style gaffer tape setup ;D ;D ;D

As long as an appropriate fuse is fitted, along with colour-coordinated gaffer tape. ;D

Kevin
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Gaffers

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Re: Engine noise, terminal?
« Reply #586 on: 12 April 2010, 11:31:31 »
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I think checking the oil pressure is the next move - before it's driven hard, just in case.

To that end, if the thread's the same, you are welcome to borrow the pressure gauge off the Westfield for a while? Just thinking it can be chucked on top of the dash so you can keep an eye on it while driving.

Kevin
In a tunnie style gaffer tape setup ;D ;D ;D

Oi!  Dont bring me into your mess!  ;D
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TheBoy

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Re: Engine noise, terminal?
« Reply #587 on: 15 April 2010, 19:33:57 »
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delighted, excellent news, well done "team"... ::) ;)

We decided that you might have been the "Curse" as you weren't here today ::) ::) :D :D :D
yeah yeah, notice i congratulated the team, not the manager...
 ;D ;)

just prooves the fault lay with the grumpy car and owner, obviosly...we did our bit no problem. :y

In all seriousness, it was one of those dreadful coincidences that would probably have been one of the first things checked if the LPG work hadn't been done :y :y

Definitely seems to be related to oil temperature (and thus pressure) :-/

Have you got an oil pressure tester Mr DTM?  :y

Should have by the end of this week
Has tester been acquired yet?
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2woody

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Re: Engine noise, terminal?
« Reply #588 on: 16 April 2010, 10:51:41 »
what have I missed ? I've been away for a couple of weeks (ahem) "with MoD"

is it sorted ?
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Kevin Wood

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Re: Engine noise, terminal?
« Reply #589 on: 16 April 2010, 11:02:05 »
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what have I missed ? I've been away for a couple of weeks (ahem) "with MoD"

is it sorted ?

Well, it's looking better. Mark found a couple of marginal lifters and a leaky EGR pipe. one or t'other of those has stopped the really concerning noise but it's still a little more rattly than normal, IMHO.

We got the LPG conversion finished last weekend and noticed, while mapping it, that the noise got much worse if it was given a bit of "spirited" driving. Keep it below 3K RPM and it's fine. Drive it hard and it gets progressively noisier and takes perhaps 5 or 10 minutes of gentle driving / idling to subside.

Seems oil temperature related, in my mind. Get the oil stinking hot and the lifters start to grumble (it's all the lifters now, too, but just a rattle. no sign of any bottom end noises).

Currently wondering if the oil pressure is a little low due to (for example) a stuck relief valve, and it gets worse with hot oil.

No oil light, and there's plenty of oil getting up to the top end but current thinking is to get an oil pressure gauge on it and see what that tells us.

Kevin
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2woody

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Re: Engine noise, terminal?
« Reply #590 on: 16 April 2010, 11:19:58 »
sounds logical - when's the filter last changed ?

and has it got the right grade of oil in it ?
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Kevin Wood

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Re: Engine noise, terminal?
« Reply #591 on: 16 April 2010, 11:27:25 »
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sounds logical - when's the filter last changed ?

and has it got the right grade of oil in it ?

I know the oil and filter only had 1500 miles on it when the problem first arose and I believe Jaime said it's had a flush with lifter treatment and some fresh oil since the bad lifters were replaced.

Kevin
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Andy B

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Re: Engine noise, terminal?
« Reply #592 on: 16 April 2010, 11:28:59 »
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it's had a flush with[/highlight] lifter treatment and some fresh oil since the bad lifters were replaced.

Kevin

Disturbed sh1te blocking an oil way?  :-/  :-/
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TheBoy

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Re: Engine noise, terminal?
« Reply #593 on: 16 April 2010, 11:39:03 »
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sounds logical - when's the filter last changed ?

and has it got the right grade of oil in it ?
About 400 miles ago, and its got GM 10/40 semi in it.

Toying with doing another quick change, as it did have some Forte oil flush put through just before last oil change in the hope it may unstick any slightly sticky oil pressure bypass...
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Re: Engine noise, terminal?
« Reply #594 on: 16 April 2010, 11:41:08 »
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sounds logical - when's the filter last changed ?

and has it got the right grade of oil in it ?
TB is very anal about his oil changes, every 3k 10w40 semi simf.

But with 160k on his clock i wondered about using some of that thicker mineral oil they use for old classics with clapped out, sorry, wider tolerance engines. (snigger) ::) ;)
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Kevin Wood

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Re: Engine noise, terminal?
« Reply #595 on: 16 April 2010, 11:58:48 »
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sounds logical - when's the filter last changed ?

and has it got the right grade of oil in it ?
About 400 miles ago, and its got GM 10/40 semi in it.

Toying with doing another quick change, as it did have some Forte oil flush put through just before last oil change in the hope it may unstick any slightly sticky oil pressure bypass...

I would wait until it's had a gauge on it. If the rest of the engine is like it is under the cam covers there's no crud to worry about.

Kevin
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2woody

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Re: Engine noise, terminal?
« Reply #596 on: 16 April 2010, 12:08:17 »
had the sump off ?

in my ex-plod car, I found three o-rings caught in the oil pick-up.

easy to do as well
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TheBoy

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Re: Engine noise, terminal?
« Reply #597 on: 16 April 2010, 12:14:55 »
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had the sump off ?

in my ex-plod car, I found three o-rings caught in the oil pick-up.

easy to do as well
Not had sump off.

Have less than ideal facilities here for that kind of work (tarmac drive, and always very, very dusty).

The only people to have cam covers off are myself (all gaskets/o rings accounted for), Marks DTM (likewise), and Kevin Wood (all reused).  Not sure if any other foreign matter could have got into system, assuming we are going along with the theory that the current issue was related to the previous issue, and that seemed to happen at some point before it enter Kevin Wood's garage  :-/

If the oil pressure shows to be low, certainly worth investigating the strainer though :y
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tunnie

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Re: Engine noise, terminal?
« Reply #598 on: 16 April 2010, 12:40:44 »
don't suggest sump off, guess who would be roped in to do that  :(
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TheBoy

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Re: Engine noise, terminal?
« Reply #599 on: 16 April 2010, 12:43:59 »
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don't suggest sump off, guess who would be roped in to do that  :(
You have a clean garage ;) (well, cleaner than my tarmac drive)


But the sump probably isn't coming off until a pressure gauge has indicated its the next step ;)
« Last Edit: 16 April 2010, 12:45:30 by TheBoy »
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