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SVA pass-woo hoo. Engine woes-boo hoo
Neil P - 16/7/09 at 08:43 PM

Took my car in to Beverley yesterday for SVA re-test. Went through no problem and I drove it home clutching my newly acquired MAC.

On the way back it started misfiring and cutting out and then started making a God awful clattering noise. It seemed to be running very hot when I took the bonnet off.

Have a look at the video, anyone like to take a punt on what is happening?

Neil

Engine noise


Jasongray5 - 16/7/09 at 08:47 PM

Well done on your pass mate!
Not a clue about the engine, but it sounds like a derv now???
Dropped a valve maybe?

[Edited on 16/7/09 by Jasongray5]


LBMEFM - 16/7/09 at 08:48 PM

Have you an oil pressure gauge or checked the oil level, sounds like big ends to me.


mookaloid - 16/7/09 at 08:50 PM

certainly doesn't sound good - hard to tell exactly where it's coming from but it could be a knackered cam or big ends or valves hitting a piston.

You need to have a look inside, but most likely you need a new engine

Congrats on the pass by the way


nitram38 - 16/7/09 at 08:50 PM

Dropped a valve or broken a camshaft?


Neil P - 16/7/09 at 08:51 PM

I'm wondering if this is a good excuse to find a 20v instead.

Bloody annoying though, at the point I get it through test it breaks.

Neil


richard - 16/7/09 at 08:52 PM

does not sound good, do not know a lot about these engines,( pinto for me ) but sounds endy.


clairetoo - 16/7/09 at 08:52 PM

Maybe cam timing - slipped / stripped / jumped cam belt ?


Neil P - 16/7/09 at 08:53 PM

Pretty sure the noise is coming from within the block rather than the head.

Makes you cringe when you stand next to it.

Neil


rost - 16/7/09 at 08:54 PM

Same thing happened here on a 20V 4AGE, turned out two big-end bearings failed! They tend to get stuck to the crankshaft after sitting still for a while, they'll fall out eventually. I've head of ofther occasions of this happenign. Don't run the engine, cause it will make things worse!
The bearings were a pretty easy fix, just remove the oil pan and you're able to un-tighten the rods, check if the bearings are still attached firmly and if they're in good shape! If it damaged your crank you'll problably be off cheaper by buying a 20V indeed!

[Edited on 16/7/09 by rost]


miikae - 16/7/09 at 09:06 PM

After listerning to it a few times my money is on the big ends kaput , drop the sump and check big end caps are all ok , no broken bolts etc.

Mike


MikeRJ - 16/7/09 at 09:09 PM

Check the cam and crank pulleys are tight.


Neil P - 16/7/09 at 09:11 PM

I'll have a look at the big ends. Not sure why they would give up quite so quickly, though. (about 40 miles)

Neil


MautoK - 16/7/09 at 09:33 PM

Sounds 'endy' on the face of it, but it seems a little too high pitched - not a heavy enough sound from my experience.
However, dropping the pan will give you a simple yes/no.

I had an MG Midget (A Series) some while back and fitted an aftermarket belt drive for the cam. The cam wheel was very slightly thinner than the original sprocket; the bolt didn't pull down tight onto the wheel, so it had a few degrees of slack onto the Woodruff key. That gave a similar noise to yours, Neil. It was rpm-dependent and a pig to diagnose (engine out twice!).

There again, if the engine has been standing a long time, and if the oil system didn't prime on first restart it could easily melt a shell or many.

Cheers,
John.

PS I once bought an Imp knowing that the big ends were shaky - 'bit of a tap after 10 miles', so I was told. Got home, dropped the sump, put #3 big end cap on the right way round and subsequently did lots of miles, trials, autotest with no problems!


splitrivet - 16/7/09 at 10:18 PM

Sounds like big ends for sure.
Cheers,
Bob


Nash - 16/7/09 at 10:40 PM

Big end knock. Is there metel in the oil?

Re: it happening so quickly, do you have oil circulation. Are your oilways free flowing? Are the bearings rollers or shells? If they're shells and they aren't getting lubricated they will drop out very quickly!

work out how many revolutions the shells have done

40 miles at average of 20mph = 120 minutes of work on average. Assume an average RPM of 3000 x 120 minutes = 360000 revolutions. That would be more then enough time to wipe a white metal bearing if not lubed. Check the oil for "bits" and drop the sump

Good luck

.........Neil


Land Locked - 17/7/09 at 07:11 AM

Sounds like big ends to me.


gaz_gaz - 17/7/09 at 07:40 AM

big ends almost certainly,

i had the exact same noise last week while driving my other halfs car,

oh she was pleased


Andy D - 17/7/09 at 07:54 AM

Does it have a shortened sump? perhaps the crank is catching it? If not, it sounds pretty major...


jpindy3 - 17/7/09 at 07:59 AM

well done,'how come you did a sva??
im sorry to hear that nosie but i think you will find that engines buggerd


Peteff - 17/7/09 at 09:07 AM

Big end knock. My friend's daughter has blown two of these in her MR2 and they sounded just like that


speedyxjs - 17/7/09 at 11:49 AM

quote:
Originally posted by jpindy3
well done,'how come you did a sva??


Anyone who failed SVA before the IVA came is has up to 6 months to retest under SVA rules.

Well done on the pass, sorry to hear about the engine


mad-butcher - 17/7/09 at 04:27 PM

put it in in for dvla inspection as it is, they don't need to hear it running, otherwise I can forsee an engine number not matching the one on the documentation problem

tony


Ninehigh - 17/7/09 at 07:29 PM

I had an escort that sounded like that until the exhaust broke off at the manifold... Other than that I can tell you it's not the tappets!

Ford told me the rattling was the alternator so might be as well checking that too...


Neil P - 17/7/09 at 09:55 PM

quote:

im sorry to hear that nosie but i think you will find that engines buggerd



That was my diagnosis

Thanks for the suggestions. I don't know what sort of oil pressure was building up but I could see it delivering oil over the cams.

I'll have a look up her bottom and see what's going on.

Neil


Ninehigh - 17/7/09 at 10:11 PM

quote:
Originally posted by Neil P
I'll have a look up her bottom and see what's going on.

Neil


Then will you have a look at the engine? :p