Timing marks 2.0

[cogs]

I'm trying to resolve a continuous vvt problem I have on my 2.0 V40. Previously posted here
https://www.volvoforums.org.uk/showp...69&postcount=1

I decided today to try and check the timing of the cam belt. I found the timing marks on the exhaust cam pulley but I can't see any on the inlet vvt pulley. I've turned the engine over by hand several times but can't see anything.
Are there markings on this pulley similar to the dot on the exhaust pulley.
Any help appreciated.

[Clan]

Originally Posted by cogs

I'm trying to resolve a continuous vvt problem I have on my 2.0 V40. Previously posted here
https://www.volvoforums.org.uk/showp...69&postcount=1

I decided today to try and check the timing of the cam belt. I found the timing marks on the exhaust cam pulley but I can't see any on the inlet vvt pulley. I've turned the engine over by hand several times but can't see anything.
Are there markings on this pulley similar to the dot on the exhaust pulley.
Any help appreciated.

No, any marks on the toothed pulley should be ignored, the only way to locate the camshafts properly is fit the Aligning tool in the slots at the back of the camshafts. The marks are ignored because they are stamped in the factory once the cam timing has been done. once you remove the adjustable pulleys the marks should be ignored as you will never get the adjustment back in EXACTLY the same place. Once you get the timing correct you can stamp new alignment marks on the pulleys.

[cogs]

I'll have to make a tool to fit the slots but from what I can see the slots line up with each others.

As the runs perfectly fine with the vvt solenoid disconnected I'd be happy to leave it but ittriggers the dash malfunction light and the MOT is due next month. I thinking of trying to trick the ECU into thinking the solenoid is connected by using a suitable resistor across the connections or making a blanking plate to sit under the solenoid so it is inactive in operation but still connected to solenoid for ECU to see. Though I don't know if will effect the emissions test.

[Clan]

Originally Posted by cogs

I'll have to make a tool to fit the slots but from what I can see the slots line up with each others.

As the runs perfectly fine with the vvt solenoid disconnected I'd be happy to leave it but ittriggers the dash malfunction light and the MOT is due next month. I thinking of trying to trick the ECU into thinking the solenoid is connected by using a suitable resistor across the connections or making a blanking plate to sit under the solenoid so it is inactive in operation but still connected to solenoid for ECU to see. Though I don't know if will effect the emissions test.

You cant make a tool , the slots are not in a straight line. camshaft timing is critical you cant do it by eye.

[cogs]

Originally Posted by Clan

You cant make a tool , the slots are not in a straight line. camshaft timing is critical you cant do it by eye.

According to my manual the camshafts both sit horizontal for the tool to attach once you're engine is at tdc. It even tells you roughly how to make the tool.

I think we must be talking about different engines or something. Thanks for input though.

[ITSv40]

Clan is correct - the slots do not line up in a straight line. The slots are off centre and one is below the horizontal line and one above. I have just fitted a new VVT pulley last week on mine and the difference in performance is quite remarkable. You do need the correct tool.
The other thing to note: the timing is not set at TDC. All four pistons are at the half way mark in the cylinders.

[magnuz]

Maybe some engines are different ? But when i did my VVT pulley, I made the tool from some angle steel & flat bar, It took a bit of tweeking to get it to fit right , but it did the job. It also needs to be strong, as it can twist, when undoing & tightening the VVT fixing bolt.

[cogs]

Originally Posted by ITSv40

Clan is correct - the slots do not line up in a straight line. The slots are off centre and one is below the horizontal line and one above. I have just fitted a new VVT pulley last week on mine and the difference in performance is quite remarkable. You do need the correct tool.
The other thing to note: the timing is not set at TDC. All four pistons are at the half way mark in the cylinders.

Thanks, so much for the Haynes manual.

[cogs]

My engine is the Volvo B4204S2, Its a manual trans.

I'm actually starting to wonder if there is a problem regarding the cam shaft position sensor. Though I guess that would play up even when the vvt solenoid was disconnected, I guess.

[ITSv40]

Same engine as mine. You really need the codes read as otherwise you will be chasing possible causes.. Regards the homemade tool: I made one up for my previous V40, 2inch angle iron, well fitting flats to fit the camshaft slots, all bolted up tight. Went to undo the cam pulleys and the tool just twisted out of the cams. Bought the proper Volvo tool and so satisfying to know it will do the job and will be spot on timing wise.