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Showing results for tags 'timing'.
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camshaft cover 2011 1.2 12v Polo camshaft question
123-yoyoman posted a topic in Engine, Transmission and Exhaust
Hi The timing chain slipped on my daughters car on start up. Fortunately the damage was limited to six bent inlet valves. I have replaced both inlet/exhaust valves and had a machine shop replace the valve guides. I am now reassembling the top end of the engine. I have refitted the cylinder head and the rocker/camshaft cover. I have bolted the pulleys onto the camshafts ready to fit the timing locking pins. As per the Haynes manual, I have ensured none of the pistons are at the top of their travel. However I am confused as to why the camshafts do not turn smoothly. When using a socket/bar on either of the camshaft pulley bolts the camshaft will need some force before it will turn. Then it will 'ping' free and require more force until it will turn again. I would guess the resistance each time corresponds to a camshaft lobe opening its valve but is this normal. I re-examined the camshafts in their housings and they both move freely and smoothly prior to fitting to the cylinder head. Should there be so much resistance to the camshafts turning. Surely they should rotate more smoothly. I am unfamiliar with these engines so any advice would be very welcome. Many thanks Pete -
I did a timing belt change today but I was having trouble with the timing marks. On the cam gears there are 2 dots, and I know they have to be aligned, looking at each other. On the crank gear the mark is a ground tooth, but where should it be facing? I have seen some AFH cam belt changes online, but mine does not have the same marks. For e.x. This one seems apparent as to where the mark should be facing. But my car has this type of marks on the block. Does anyone know where the crank mark should be facing?
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Hi there, Looking for some help when it comes to timing a GTI engine. As it stands I have GTi engine which I have replace the timing belt on. Now I'm not 100% confident that the engine timing is correct after reading from other source you need specific tools. So instead of potentially damaging the engine I want to start from scratch as if I don't know what position the cams or crank is in. What I want to know is what positions the cams and crank should be in and what tools if any are required to get the timing right. Apologies if this topic already exists but I couldn't find it. Thank you in advance.