Good afternoon folks

I posted a few weeks back having lost what seamed like the left hand bank of cylinders. Well its been a bit of a head screw to get to where i am now, mainly because the truck is 8 miles away and i work in and out of thr country, so I can't spend time on the old girl.
Today I did a compression test and found #2 had zero pressure.
Its broken the inlet valve spring.

1) can the spring be replaced without removing the cylinder head.
2) If not, would you folks advise replacing all the valve springs?
3) Is the engine a safe engine? In otherwords, since this happened at low rev's and while i have been able to raise the revs up to just under 3000 rpm ( no i didnt know the spring was broken then) should the valve have missed the piston?

Thank you in advance for any input

My best regards

Andy

 

1. Yes.

2. That's up to you. Generally, springs are one of the last things to fail. Though if you do decide to replace all of them, good time to do valve seals as well.

3. I would be tempted to have a look with a bore scope, should be able to rent one from your local big-chain auto parts store. See what the top of the piston looks like, and the valve itself. If you have a compressed air source, pulling the valve closed, piston at tdc, pressurize the cylinder, and see if it the valve seats all the way.

I would expect though, that if the piston and valve met, you would have HEARD that.

 

Thank you for your reply, most appreciated.Now i have to find time to do it!

All the best

Andy