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(Post Link) post #1 of 12 Old 21-03-10 Thread Starter
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Emissions (TS)

Hi,

I'm having problems with my recently-rebuilt CF1 engine... Basically, it runs beautifully, but give it a few thousand rpm and it belches out plumes of thick white (with a hint of blue) smoke.

I did have a problem with the inlet manifold gasket passing oil into the bores, so I refitted that yesterday with plenty of sealant and left it overnight.

Smaky also suggested removing the exhaust manifold studs and refitting each of those with sealant. I've done one of them so far, which did look like it was passing.

Would oil going down the manifold generate white smoke?

Anyone got any other ideas? I'm rapidly losing interest in it

Cheers,

Iain
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(Post Link) post #2 of 12 Old 21-03-10 Thread Starter
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What I might do (next weekend) is take the exhaust manifold off completely and refit the studs. It might be easier that way...
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Just noticed that there's a fair bit of water under the exhaust...no idea where that's coming from. It's not losing any coolant, and a sniff-test was a-ok (as was a compression test).
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Are you sure its not just water/oil thats dripped into the downpipe when you removed the head?
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Are you sure its not just water/oil thats dripped into the downpipe when you removed the head?
No...but I was hoping it might be.... It's had a few decent runs since the rebuild, so I'd have thought (I may be wrong) that it'd have blown out by now...
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You haven't forgotten a valve stem oil seal have you Iain?
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You haven't forgotten a valve stem oil seal have you Iain?
No, I don't think so anyway. I am a bit worried that I may have fitted one (or more) wrong though......first time I've done them.
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No, I don't think so anyway. I am a bit worried that I may have fitted one (or more) wrong though......first time I've done them.
I haven't done them either on a TS.

I am just wondering how it could it be possible to fit them wrong.. They need pushing right down and need to be fitted the correct way up, but other than that not much can happen unless they are damaged in some way.

What about the manifold gasket around the channel for the cam variator oil feed?
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I followed Smaky's guide. I'm a bit worried I fitted them with a little bit too much vigour - the cup things that sit under the springs were a bit tight to get over them afterwards. Or maybe one of the little springs that hold the neck of them tight pinged off?

Yep, the gasket you refer to is the one I was having problems with. First one didn't seal. 2nd one didn't seal. Refitted 2nd one with gasket-goo. Before I did so, pistons 1, 3 and 4 were swimming in oil.

Haven't checked them since...I wasn't in a good mood!!!
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Quote:
Originally Posted by iainfm View Post
Hi,

I'm having problems with my recently-rebuilt CF1 engine... Basically, it runs beautifully, but give it a few thousand rpm and it belches out plumes of thick white (with a hint of blue) smoke.

I did have a problem with the inlet manifold gasket passing oil into the bores, so I refitted that yesterday with plenty of sealant and left it overnight.

Smaky also suggested removing the exhaust manifold studs and refitting each of those with sealant. I've done one of them so far, which did look like it was passing.

Would oil going down the manifold generate white smoke?

Anyone got any other ideas? I'm rapidly losing interest in it

Cheers,

Iain
you havent got a problem with a liner seal,why was engine rebuilt,was it head gasket ,belts failed or? and oil in hot manifold will billow white smoke tinged with blue

Last edited by davealfa11; 23-03-10 at 00:22.
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(Post Link) post #11 of 12 Old 23-03-10 Thread Starter
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It was a big-end failure... Will try the exhaust manifold this weekend and that it from there!

Thanks!
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(Post Link) post #12 of 12 Old 14-04-10 Thread Starter
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Well, after changing (and sealing) the inlet manifold, and following Smaky's advice to seal the exhaust manifold studs, I took it for an MOT today, and she passed the emissions test with flying colours.

A few small odds-and-sods to put right (biggest being a front ball joint), and she'll be back on the road.

I'm more than a little bit relieved. I was beginning to have 'eBay' thoughts!
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