Help & Advice Please - Engine Misfire
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Re: Help & Advice Please - Engine Misfire
Can't agree with the hylomar - thin film of grease is fine I have found. And I prefer to just retorque after the first heat cycle - and then leave well alone !
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PhilR
- Minor Fan
- Posts: 103
- Joined: Sun Sep 21, 2008 8:21 pm
- Location: Trowbridge, Wilts
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Re: Help & Advice Please - Engine Misfire **Photos Added
Got the head off this afternoon. Quite clear what the problem is!
Looks like it was about to blow between cylinders 3 &4 too as the gasket had started to split there too.
Goodness knows where the missing piece of gasket has gone....should I be concerned?
Head looks OK, or at least the valves do. I haven't examined it with a steel rule to check if its straight yet but will do before I put it back together.
I've added some pictures so any comments/advice would be welcome.
http://i275.photobucket.com/albums/jj31 ... G_1321.jpg
http://i275.photobucket.com/albums/jj31 ... G_1322.jpg
http://i275.photobucket.com/albums/jj31 ... G_1323.jpg
Looks like it was about to blow between cylinders 3 &4 too as the gasket had started to split there too.
Goodness knows where the missing piece of gasket has gone....should I be concerned?
Head looks OK, or at least the valves do. I haven't examined it with a steel rule to check if its straight yet but will do before I put it back together.
I've added some pictures so any comments/advice would be welcome.
http://i275.photobucket.com/albums/jj31 ... G_1321.jpg
http://i275.photobucket.com/albums/jj31 ... G_1322.jpg
http://i275.photobucket.com/albums/jj31 ... G_1323.jpg
Re: Help & Advice Please - Engine Misfire
Oh dear - looks like it's been run for some time like that?? I would be concerned for the head and block in case they are eroded. May as well grind in the valves while the head is out - assuming it doesn't need surface grinding first.
Re: Help & Advice Please - Engine Misfire
Well done on getting the head off. No need to worry about where the missing bit went, it's long gone down the exhaust. However, I would be very concerned about the state of the head and block. Checking with a straight edge is essential. If it looks OK, then try putting the head back with a new gasket. If it runs OK, then "phew" but if it blows again after a short period of use then I'm afraid that it will be strip and skim. You might get away with just the head, but might have ot do the block as well. Try and see. Good luck.
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Pilkie
- Minor Friendly
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- Location: Southwest UK
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Re: Help & Advice Please - Engine Misfire
Hi Phil.
Its been a while since your headgasket blew.
Whats the lastest news??
PS.
The headgasket went on mine on monday,had a sudden misfire on way to shops!
It blew from No1 into the cooling system!
When you took the rad cap off it was chuffing just like a trains chimney!
The engine had been stood for a while,and the copper headgasket had obviously deteriorated,but head,block and pistons are excellent.
It will be going shopping again this afternoon!
Its been a while since your headgasket blew.
Whats the lastest news??
PS.
The headgasket went on mine on monday,had a sudden misfire on way to shops!
It blew from No1 into the cooling system!
When you took the rad cap off it was chuffing just like a trains chimney!
The engine had been stood for a while,and the copper headgasket had obviously deteriorated,but head,block and pistons are excellent.
It will be going shopping again this afternoon!
Classic cars rule!! No moderns live here!!
So far 37yrs using,buying,selling,repairing,restoring classic cars,and still learning!.
My daily driver since 1999 is my
1971 Rover P6V8,rostyles,webasto,leather.
Fun in the sun 1970 Triumph TR6pi UK car. I restored it in 2008.
1968 S1 Rover P6 V8,2 owner 40k miles,super solid,never welded,rostyles,MINT!
Just done a 19 panel off repaint in original arden green!
So far 37yrs using,buying,selling,repairing,restoring classic cars,and still learning!.
My daily driver since 1999 is my
1971 Rover P6V8,rostyles,webasto,leather.
Fun in the sun 1970 Triumph TR6pi UK car. I restored it in 2008.
1968 S1 Rover P6 V8,2 owner 40k miles,super solid,never welded,rostyles,MINT!
Just done a 19 panel off repaint in original arden green!
-
PhilR
- Minor Fan
- Posts: 103
- Joined: Sun Sep 21, 2008 8:21 pm
- Location: Trowbridge, Wilts
- MMOC Member: No
Re: Help & Advice Please - Engine Misfire
Hi Dave,
We were on holiday for two weeks so I didn't bother replacing it until last weekend. I then realised I needed a few more bits to finish it properly.
I took the opportunity to purchased a new unleaded head as by the time I compared the cost of reconditioning mine, there wasn't much in it. I'll keep my original head as a spare.
I finally got it all back together yesterday and it seems to be running fine. Nicely up to temperature so tightened it down after the first heat cycle and adjusted the rocker clearances etc.. Am off out for a spin a little later so all should be good. I have a lot of events coming up in September so I am looking forward to those.
Thanks for all your help guys.
We were on holiday for two weeks so I didn't bother replacing it until last weekend. I then realised I needed a few more bits to finish it properly.
I took the opportunity to purchased a new unleaded head as by the time I compared the cost of reconditioning mine, there wasn't much in it. I'll keep my original head as a spare.
I finally got it all back together yesterday and it seems to be running fine. Nicely up to temperature so tightened it down after the first heat cycle and adjusted the rocker clearances etc.. Am off out for a spin a little later so all should be good. I have a lot of events coming up in September so I am looking forward to those.
Thanks for all your help guys.