Sooty Deposits
Discussion
Guys
Got the car back at last, all gaskets done, but we now have sooty deposits coming from the exhaust when revved, nothing on tickover. I know this could be anything from piston rings, manifold or just running rich. Any thoughts? A new airfilter is needed and is ordered but I doubt this is anything to do with it.
Mark
Got the car back at last, all gaskets done, but we now have sooty deposits coming from the exhaust when revved, nothing on tickover. I know this could be anything from piston rings, manifold or just running rich. Any thoughts? A new airfilter is needed and is ordered but I doubt this is anything to do with it.
Mark
If it's doing that with the engine cold is probably nothing to worry about.
If the engine is hot, there are 2 or 3 possibilities:
1. sucking oil pas valve guides at high vacuum (ie idle) - test for this by getting somebody to follow you down a hill on the overrun and then watch for a puff of white smoke when reapplying the accelerator.
2. Oil past the rings - generally the engine will smoke all the time. Does the exhaust smell of oil?
3. Mixture - does the exhaust smell of petrol?
How much did your head gasket work end up costing you, if you don't mind me asking (if you do, tell me to mind my own...).
If the engine is hot, there are 2 or 3 possibilities:
1. sucking oil pas valve guides at high vacuum (ie idle) - test for this by getting somebody to follow you down a hill on the overrun and then watch for a puff of white smoke when reapplying the accelerator.
2. Oil past the rings - generally the engine will smoke all the time. Does the exhaust smell of oil?
3. Mixture - does the exhaust smell of petrol?
How much did your head gasket work end up costing you, if you don't mind me asking (if you do, tell me to mind my own...).
tvrgit said:
If it's doing that with the engine cold is probably nothing to worry about.
If the engine is hot, there are 2 or 3 possibilities:
1. sucking oil pas valve guides at high vacuum (ie idle) - test for this by getting somebody to follow you down a hill on the overrun and then watch for a puff of white smoke when reapplying the accelerator.
2. Oil past the rings - generally the engine will smoke all the time. Does the exhaust smell of oil?
3. Mixture - does the exhaust smell of petrol?
How much did your head gasket work end up costing you, if you don't mind me asking (if you do, tell me to mind my own...).
The engine isnt smoking at all, now you mention it, it does smell of petrol. I will check tomorrow, if it smells of oil I assume that means piston rings?If the engine is hot, there are 2 or 3 possibilities:
1. sucking oil pas valve guides at high vacuum (ie idle) - test for this by getting somebody to follow you down a hill on the overrun and then watch for a puff of white smoke when reapplying the accelerator.
2. Oil past the rings - generally the engine will smoke all the time. Does the exhaust smell of oil?
3. Mixture - does the exhaust smell of petrol?
How much did your head gasket work end up costing you, if you don't mind me asking (if you do, tell me to mind my own...).
Head gasket was bloody expensive, head needed skimming and water pump needed sorting (this was the problem as it was completly blocked. The radiator wasnt getting hot so the fan wasnt cutting in and so on...)
If your old air filter is choked I would have thought that will enrich the mixture, despite all the electronic trickery it will only work within certain limits.
Also if it hasn't been used a great deal before you bought it (I think you said this before, prob also borne out by water pump) then its pretty likely the exhaust will be full of soot & rubbish.
You could try removing the air filters just to see if it makes any diference, though I don't think its a great idea to leave them off permanently, I think the innards of the ford ones are a bit delicate.
Might be worth getting the CO level checked - it may be running rich - if you can hangon for a bit I'm thinking of getting a cheap CO meter.
My V8 stinks like hell, especially when cold, I wouldn't dream of reversing it in the garage with the amount of crap that comes out the back - we are talking 80's technology here thats been fiddled with by TVR - the fuelling isn't the most precise system in the world and its always safer to overfuel than underfuel.
Let the head gaskets bed in for a bit then take it out for a John Cleese damn good thrashing to blow the cobwebs away !
Glad its fixed, we still need to catch up for that beer.
Chris
Also if it hasn't been used a great deal before you bought it (I think you said this before, prob also borne out by water pump) then its pretty likely the exhaust will be full of soot & rubbish.
You could try removing the air filters just to see if it makes any diference, though I don't think its a great idea to leave them off permanently, I think the innards of the ford ones are a bit delicate.
Might be worth getting the CO level checked - it may be running rich - if you can hangon for a bit I'm thinking of getting a cheap CO meter.
My V8 stinks like hell, especially when cold, I wouldn't dream of reversing it in the garage with the amount of crap that comes out the back - we are talking 80's technology here thats been fiddled with by TVR - the fuelling isn't the most precise system in the world and its always safer to overfuel than underfuel.
Let the head gaskets bed in for a bit then take it out for a John Cleese damn good thrashing to blow the cobwebs away !
Glad its fixed, we still need to catch up for that beer.
Chris
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