How does the shape of the camshaft affect the valves?
The lobes on the camshaft open the valves against the force of the valve springs.The camshaft lobe changes rotary motion (camshaft) to linear motion (valves). Cam lobe shape has more control over engine per- formance characteristics than does any other single engine part.
How can you tell if a camshaft needs to be replaced?
To check, simply remove the rocker arm cover and observe the pushrods when the engine is running. If one or more pushrods is notrotating,the camshaft and/or the lifter for that particular valve is worn and needs to be replaced.
Where is the cam located in a pushrod engine?
Pushrod engines have the cam located in the block.The camshaft is supported in the block by camshaft bear- ingsand driven by the crankshaft with a gear or sprocket and chain drive. See Figure 9–4. Many over-
How to loosen camshaft sprocket on Audi A4 Mk2?
Turn the crankshaft approx. 45° anti-clockwise at the toothed belt sprocket bolt so that all pistons are clear of TDC position. Loosen camshaft sprocket using counterhold tool -3036-.
How can I repair a worn camshaft head?
In order to salvage heads with a worn camshaft bore, the aftermarket suppliers often provide camshafts with larger bearing journals. The head is bored (machined) to match the new, larger cam. An- other repair method is to bore out the head and install bearings that allow the use of the original camshaft. CAMSHAFT PROBLEM DIAGNOSIS
Pushrod engines have the cam located in the block.The camshaft is supported in the block by camshaft bear- ingsand driven by the crankshaft with a gear or sprocket and chain drive. See Figure 9–4. Many over-
The lobes on the camshaft open the valves against the force of the valve springs.The camshaft lobe changes rotary motion (camshaft) to linear motion (valves). Cam lobe shape has more control over engine per- formance characteristics than does any other single engine part.
What are the symptoms of a bad camshaft sensor?
7 Symptoms of a Bad Camshaft Position Sensor (and Replacement Cost) 1 Check Engine Light Illuminates. 2 Ignition Problems. 3 Car Jerking or Surging. 4 Engine Stalling. 5 Poor Acceleration. 6 Problems Shifting. 7 Bad Fuel Mileage.