Question about Volvo S40
SOURCE: VOLVO S40 VVT VALVE
Very easy to swap the vvt valve,but that will not guarantee to rectify the problem,more than likely it will be the vvt pulley/timing unit,this will involve the timing belt coming off.
The vvt valve is located under the upper timing cover,remove the cover and you will see the valve situated on top of the head,undo the connector and remove the 4 bolts and the valve will come off,alittle bit of oil will come out on removal.
remove gasket and ensure the area is clean.
Re-fitting is opposite procedure,ensure a new gasket is fitted.
Hope this helps
Posted on Apr 11, 2009
This is the same as a Ford Escort 1.9, the #1 cylinder should be all the way up. To confirm- the crak shift mark should be on zero which is Crank Shift Center- THe camshift sproket should align with the headmark. Make sure both marks don't move. Align the belt- not too tight , not to loose
Posted on Jul 12, 2009
Sometimes you must install the timing cover temporarily with the crank pulley to ensure you are at true Top Dead Center line up the notch on the pulley with the pointer on the timing belt cover or pointer on crankshaft cover I had a problem with a dual cam Honda in which the marks on the engine block where slightly off. you must ensure that both intake valves and exhaust valves are shut one cylinder #1 by turning the cams in the appropriate direction, from your description of the situation it sounds like when it runs poorley it is off by one tooth, when you move forward a tooth it runs but poorly make sure you are moving both cams if equipped with dual cam, both cams should be in the exact same visual location in other words all valves completly shut, be careful not to move lower shaft after lining up the crank pulley to cover pointer marks, after resetting turn the engine over two full turns then recheck all markers.
Posted on Aug 03, 2009
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