1997 Questions for all other cars timing

Tiny
KEG
  • MEMBER
  • 1997 ALL OTHER MAKES ALL OTHER MODELS
  • 4 CYL
  • FWD
  • MANUAL
  • 100,000 MILES
I have a Peugeot 406 2 litre 16 valve petrol which had a broken cambelt. I bought a replacement head as the valves on the original were bent. Without the head, the crank turns faultlessly. With the head still off, the camshafts turn faultlessly. But with the head on, and the timing pins through the relevant holes in the crank and camshaft pulleys, the belt in place and tensioned, the engine will only turn about 160 degrees.

To check there was nothing accidentally in the combustion chambers, I removed the head but found no fault.

With the belt off, I can turn the crank 360 degrees if I turn the relevant camshaft a little whenever there is an obstruction so I suspect the pistons are either hitting the valves or the inlet valve is interfering with the exhaust valve. In other words, I think it is all to do with the timing but there is only one place to put the pins through the pulleys so I can’t understand what’s wrong.

Help please.
Do you
have the same problem?
Yes
No
Tuesday, January 15th, 2008 AT 7:35 AM

1 Reply

Tiny
MHPAUTOS
  • EXPERT
Hi there,

It sounds like a valve timing problem, I would check the system by spraying a copper base lube to the valve heads, and clean the piston crowns, assemble (Just enough to hold head down flat, and turn engine untill resistance is felt. Dismantle and inspect where contact is, then this is know, we have a starting place to sort the problem out.

Mark (mhpautos)
Was this
answer
helpful?
Yes
No
Saturday, January 19th, 2008 AT 5:44 PM

Please login or register to post a reply.

Recommended Guides