Mi Tappet Noise

[jerseypug 1]

I removed the head tonight. I found 2 bent inlet valves in the second cylinder from the cam belt. Exactly as I have been told but I was hoping not to have to remove the head, they only seem slightly bent and the exhaust ones look ok. I am going to change all 4 just in case. I am hoping that the guides will be ok. This has been going on since September and I am hoping to be able to drive it before too long.

[welshpug 1,622]

the guides wont be ok! they're cheap enough too, just think of the hassle and expense if it has to come off again!

[dommorton 0]

I removed the head tonight. I found 2 bent inlet valves in the second cylinder from the cam belt. Exactly as I have been told but I was hoping not to have to remove the head, they only seem slightly bent and the exhaust ones look ok. I am going to change all 4 just in case. I am hoping that the guides will be ok. This has been going on since September and I am hoping to be able to drive it before too long.

 

Ah thought as much.

 

Glad you tracked the problem down. Double check the new valves are nice and free in the guides as they may too be slightly buggered.

[jerseypug 1]

cheers for that. looks like a visit to the machine shop. its taken long enough so another couple of days wont hurt.

[migti 0]

just a note on this

 

how do you check the guides>? or are they best replaced when valves

are bent ect

 

Cheers

[jerseypug 1]

i dont know if its the propper way but i push the valve in the head without the spring on and see if it has any side movement on it.

[dommorton 0]

Also run them in gently by hand one by one to check they are nice and free moving with no tight spots.

[jerseypug 1]

just put it all back together and is running like a dream. 2 slightly bent inlet valves. i am amazed the compression was still good and it was running fine just making a lot of noise. bent valves was the last thing i expected, i should have taken more notice of what i was told but i really did not want to take the head off again. the pistons did not have any marks on them so i am still not sure what was causing the tapping. thanks for everyones help. well pleased now.

[dommorton 0]

Hoorah! really pleased you sorted it

 

The very slightly bent valves only need to be gently kissed by the piston to send them home. That makes the tap but barely touches the piston.

[Guest Maikel205]

great you solved it!

 

Have the same work to do, but now I know 100% for sure some valves are bent.

About what you told me, your engine builder was wrong.

 

Did you need to replace the guides or were they fine?

Edited January 6, 2007 by Maikel205

[jerseypug 1]

the valves wer only slightly bent and the bend was below the guide. i put the new valves in the guides and there were no stiffness or play so i took the chance and left the guides in.

whenever the machine shop get hold of the head it comes back covered in pubic metal and takes half a day to clean out. even then you never know if it is really clean.

good luck doing your engine, dont leave paper toweling in the inlet manifold when you put it all back together like i did as it becomes a pig to start and takes ages to get it out!

[tidypug 5 2 Cars]

I'm glad that you've sprted it, TBH i was about to torch the thing when it hppened, so i'm glad you've stuck with it

[dommorton 0]

it comes back covered in pubic metal