Hi all, New guy here and this is my first post
This is actually a question on behalf of my mum, although I will be doing the work. I live in london so haven't seent the problem yet as she lives up north, but I will look over the weekend.
Problem:-
Cam belt snapped on the motorway and car needed to be towed to a workshop to be looked at. The mechanic has looked at the car and insists his information tells him its an interference engine and needs a rebuild.
I argued (over the phone) that it is not so he has tested the compression of the engine. Results are that it has no compression.
Thing is he says a rebuild is too much work for him so got her to get it towed home.
So....firstly, do you guys think he is speaking crap? Its a 1998 1.8 V6 from the UK. Non-interference right?
Secondly...any valid reason why there is no compression? Or do I have to have a rebuild.
Thirdly...If it does need a rebuild, its just a case of opening her up and changing heads right?
Would you go down the route of changing the cambelt and seeing what happens? Thats what I am thinking...
Cam / Timing belt and compression problem
Cam / Timing belt and compression problem
Last edited by jackso20 on October 25th, 2007, 10:15 am, edited 1 time in total.
I'm not really sure if your mechanic is right or not but my advice is whatever you do, don't rebuild a k8 its a waste of money, u can get kldes for cheap, sometimes for free, or you could get a nice ze and have a good start.**** edit**** i just read its on behalf of your mum, so i guess you could scratch off that idea, unless your mom would like some more power...
- 1992blazeredgs
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Also if the timing belt is broken how did he check the compression?
I have replaced the timing belt 4 times, the first time took approx 12 hours.
the last time took 3-4 hours. By the way it wasn't the belt that went bad each time it was the water pump. If your in there replacing the timing belt you might want to consider replacing the water pump to.
The 1.8 v6 is a non-interference motor.
Andy P. 1.8T
I have replaced the timing belt 4 times, the first time took approx 12 hours.
the last time took 3-4 hours. By the way it wasn't the belt that went bad each time it was the water pump. If your in there replacing the timing belt you might want to consider replacing the water pump to.
The 1.8 v6 is a non-interference motor.
Andy P. 1.8T
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- Senior Member
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- Joined: August 25th, 2004, 2:01 am
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I have seen non interference engines bend a valve when the cam belt goes. If the engine is old and the valve springs are tired the valves can float at high rpm making it possible for a valve to be opened farther than the lobe of the cam would normally do. A valve can be bent under normal dirivng conditions if the clearance is small enough. I don't know what the valve to piston clearance is in the K8, but I have seen this in the Nissan E16 engine more than once.
Also, it is impossible to check compression without a timing belt. If you're lucky 1 or 2 cylinders might be in the closed position, but on at least 4, and maybe all 6 cylinders, either the intake or exhaust valves are going to be open and not moving.
Also, it is impossible to check compression without a timing belt. If you're lucky 1 or 2 cylinders might be in the closed position, but on at least 4, and maybe all 6 cylinders, either the intake or exhaust valves are going to be open and not moving.
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93' GS SE, the Black Beast, the former love of my life...soon to be gutted and crushed.
94' GS, black on black, now in several small pieces...and one large crushed piece.
2007 Mazda3 GT Sport --- super fun
2004 Honda RC51 --- Lost forever to some theavin' bastard
My Worklog
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Never attribute to malice that which can be adequately explained by stupidity.