tappety engine

Anadinolin · Mar 28th, 2015, 16:39

Hi guys and girls,

B18u is very tappety, I have a feeling that the exhaust manifold gasket has gone again.

It shuts up very slightly when hot and just squeaks through the mot on emissions.

Any ideas on where to look or do you think im fairly accurate in my assumption?

Ian Fife · Mar 28th, 2015, 19:44

Impossible to say really without seeing/hearing it, but if it really is tappet noise (i.e. cam/cam followers) then it could be bad news. You haven't just adjusted the valve clearances have you? If you don't get them right then they will make a tappet noise, otherwise could be cam/cam follower excess wear. Oldish Fords can often be heard with a really bad tappet noise - ticking noise at half engine speed.
With any luck it will just be the exhaust gasket!!

IanF

Anadinolin · Mar 28th, 2015, 20:39

Haven't touched the valves, only when I put ipa (brake cleaner) on the surface when changing a headgasket. The engine has done only 79k was slightly tappety then. Hmm ill try the exhaust gasket and hopefully it sorts it, if not the top is comming off again.

Ian Fife · Mar 29th, 2015, 08:33

Before doing any work I would make a determined effort to identify where the sound is coming from. Have a listen to the cam with the oil filler cap removed (OK, you will get a bit of oil spray, but if the noise is from the cam it should be louder). And stick your ear as close to the manifold as you can, just watch out for singed hair. I would have thought that the sound of a blowing exhaust gasket was quite distinct from a ticking tappet?
If you do decide on it being a cam/cam follower issue, then the first step is to check the clearances are OK. Too tight and you may burn a valve, too slack and you will get a clacking sound. Also examine the cam and follower surfaces for any obvious signs of wear/pitting/discolouration.
Lots to do before you start ripping it apart I think?
best of luck,

IanF

p.s. a good 2 litre B20F is sitting in my 440 awaiting a new home!!

doingitsideways · Mar 29th, 2015, 10:59

Hmm...

Chances are it's the tappet shims that are kiffed.

Trouble is, they're nigh on impossible to get hold of now.
Add that to the fact that it has to be stripped down to see what sizes you need before trying to source some!

Mar 28th, 2015, 16:39	#1
Anadinolin VOC Member Last Online: Jun 20th, 2022 14:32 Join Date: Oct 2009 Location: Upminster View Photos By: Anadinolin	tappety engine Hi guys and girls, B18u is very tappety, I have a feeling that the exhaust manifold gasket has gone again. It shuts up very slightly when hot and just squeaks through the mot on emissions. Any ideas on where to look or do you think im fairly accurate in my assumption? __________________ what good music deserves is full deep bass to give it warmth. the stock volvo sub works....just at high volumes Drum n Bass and dubstep

Mar 28th, 2015, 20:39	#3
Anadinolin VOC Member Last Online: Jun 20th, 2022 14:32 Join Date: Oct 2009 Location: Upminster View Photos By: Anadinolin	Haven't touched the valves, only when I put ipa (brake cleaner) on the surface when changing a headgasket. The engine has done only 79k was slightly tappety then. Hmm ill try the exhaust gasket and hopefully it sorts it, if not the top is comming off again. __________________ what good music deserves is full deep bass to give it warmth. the stock volvo sub works....just at high volumes Drum n Bass and dubstep

Mar 29th, 2015, 10:59	#5
doingitsideways The Daddy Last Online: Feb 29th, 2024 15:07 Join Date: May 2010 Location: Manchester	Hmm... Chances are it's the tappet shims that are kiffed. Trouble is, they're nigh on impossible to get hold of now. Add that to the fact that it has to be stripped down to see what sizes you need before trying to source some! __________________ XC90 V8 Exec, C70 2.4T Convertible, S70 T5 CD, 850 TDI, 2 x Escort vans and a 2.8i Capri. Clearout has begun, but must continue!

Mar 28th, 2015, 19:44	#2
Ian Fife Senior Member Last Online: Today 17:04 Join Date: Jan 2006 Location: Inverkeithing	Impossible to say really without seeing/hearing it, but if it really is tappet noise (i.e. cam/cam followers) then it could be bad news. You haven't just adjusted the valve clearances have you? If you don't get them right then they will make a tappet noise, otherwise could be cam/cam follower excess wear. Oldish Fords can often be heard with a really bad tappet noise - ticking noise at half engine speed. With any luck it will just be the exhaust gasket!! IanF

Mar 29th, 2015, 08:33	#4
Ian Fife Senior Member Last Online: Today 17:04 Join Date: Jan 2006 Location: Inverkeithing	Before doing any work I would make a determined effort to identify where the sound is coming from. Have a listen to the cam with the oil filler cap removed (OK, you will get a bit of oil spray, but if the noise is from the cam it should be louder). And stick your ear as close to the manifold as you can, just watch out for singed hair. I would have thought that the sound of a blowing exhaust gasket was quite distinct from a ticking tappet? If you do decide on it being a cam/cam follower issue, then the first step is to check the clearances are OK. Too tight and you may burn a valve, too slack and you will get a clacking sound. Also examine the cam and follower surfaces for any obvious signs of wear/pitting/discolouration. Lots to do before you start ripping it apart I think? best of luck, IanF p.s. a good 2 litre B20F is sitting in my 440 awaiting a new home!!

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