kmellott

Where are the cam marks on the exhaust and intake cams. The intake cam has a mark "l" on the front side of the gear. The exhaust has a mark "l" on the back side. Both cams have a "M" on them. I have replace the belt using the "l"
and it runs rough, missing on cylinder 4. Volvo dealer will not help. Any advice?

sulley007

Do you see any markings on the outside of the exhaust cam? This doesn't sound good my friend.

kmellott

Is it possible that the cam is off enough to allow cylinder 4 not to fire because of lack of compression?

sulley007

kmellot I've put in a call to someone I know who knows more about this than I do. I'll post up when I get a reply.

Thanks

sulley007

Here's the response I got...

If the mark alignment was wrong the problem would be more then cyl 4. Cyl # 4 could have bent valve. Why was the timing belt changed & was the car running rough before?

kmellott

I am re-installing the head and found that the torque is 15, 44, then 103 degrees. I do not know what the 130 Degrees means.

Can any one help?

kmellott

I finally got the head back on and now need a vacuum hoe diagram.
I didn't mark the hoses. Thought my memory would suffice. Does anyone know where I can get a vacuum diagram for a 1999 V70 AWD turbo 2.4?

kmellott

I finally got the head back on and now need a vacuum hoe diagram.
I didn't mark the hoses. Thought my memory would suffice. Does anyone know where I can get a vacuum diagram for a 1999 V70 AWD turbo 2.4?

sulley007

Have you checked the underside of your hood. I believe there is a vacuum hose diagram there.

2005 VOLVO V70

kmellott

I found it but it shows the red hose going to the pressure regulator from the TCV. I have a hose coded with a red dot that goes somewhere. I cannot figure it out from the diagram.

Also, thanks SULLEY007 for all the hard work and time you put into this forum.

sulley007

Try PM or Emailing user rfilori. He is very experienced and can probably help you out. Thanks for the 'thanks' on the forum. Hopefully we can get you a quick answer here.

rfilori

The hose with the red dot.....where does it come from? Or, is it totally removed at both ends? Is there a vacuum fitting on the pressure regulator that is left naked currently?

kmellott

The diagram under the hood shows that the hose (red on the diagram, and coded with a red dot where it attaches to the TCV switch, at least I believe it is a TCV switch) goes from the TCV to the pressure regulator. I can't find the pressure regulator. The diagram shows it along the passenger side firewall. Not there.

rfilori

The pressure regulator should be mounted on or near the injector rail.

bullitt91

turbo pressure regulator is located on the turbo pretty sure its on the top. lay over the top of the motor and look down on the drivers(left) side of the turbo it should be sitting right there next to the block. as for the timing marks the intake and exhaust cams are marked with a dimple on the FACE of the pulley, look at them from the right(passenger) side. the crank gear is slightly different. it has 2 marks on consecutive teeth. the mark is in between the marks. best bet would be to remove the crank pulley for the serpentine belt(4 bolts and a big 31 or 32 mm nut) so you can see the marks better. you should have reinstalled the coil cover/timing gear cover on the topside bc this is where you line up your cam marks.

bullitt91

sorry to clarify the crank gear has 2 marks on 2 consecutive teeth, the put the pointer in between the 2 marks.

kmellott

The vacuum hose went to the turbo, Thanks for the help. The engine is all back together and started. No leaks. It runs rough. ETC light is on. It runs like an engine that needs the distributor slightly adjusted. You know, the old way we adjusted timing. Any suggestions.

kmellott

I cleared all codes except SRS. The engine pulsates at idle no matter what gear it is in. any suggestions.

bullitt91

clean out the throttle unit with some carb clean... like spotless clean esp around the butterfly hinge and make sure the pcv system is clear.

bullitt91

change the gasket too