How do I Set the timing on my Proton Arena 1.5? The crank pulley is set to TDC. Where should the arrow on the cam point?

Which pulley is 180 degrees out? Crank or Cam?
The Crank shaft turns twice for every one turn of the camshaft so you could have positioned it halfway through the 4 stroke cycle so you are not at tdc on number 1.
If it is the Cam pulleys that are out of position try this...
Using a socket and ratchet, By Hand turn the CRANK Pulley CLOCKWISE One full rotation. This should bring the timing marks into the right position.

there will be a wood-ruff key that holds the gear in the correct spot if you have that don't worry, ignore the distributor when setting tdc it's all about the crank pulley and gears. First
unloop the timing belt from both gears
bring the #1(closest to the t-belt) cyinder to TDC(there's 3 marks on the crank pulley and one on the t-belt over, use the middle mark(iirc))
undo the tensioner and loop the belt over the 2 gears pointed "UP"
tighter the tensioner
spin it by hand 3 times to see that it's still in time



another way to set the cylinder to TDC stick a long 3/8 dr extension down the plug well and at the highest point that's TDC keep it there.
https://www.youtube.com/watch?v=yKFAmfeaycs

Check with manufacture, yet sometime it point to the crank pulley or maybe to a point on the block. Best to note location before it gets removed.

The 2 cams are linked with a chain at the rear of the cylinder head.

The cams need to be set so the slots on the chain sprockets line up with the cam tower caps with 16 links between cam caps.

You cannot see the front crank pulley tdc mark so you need to lock the engine at tdc with a screwdriver jammed into the timing hole on the bell housing after setting engine at tdc or use a DTI
to check to tdc in the #1 spark plug hole.

If the cams have not been disturbed you only need to set the belt cam sprocket to the mark and crank to tdc.....all this means pulling the core support into the service position so the belt tensioner can be locked down and/or doing a complete belt job along with a coolant pump if over 70,000 miles..

With the belt off and the tensioner pulley pushed back, you will need to set cylinder 1 (far passenger side) to top dead center. There is a mark on the block you can see just behind the crankshaft gear that needs to be aligned to the mark on the crankshaft gear. CAUTION NOT TO TURN THE CAM PULLEY TOO FAR IF ANY PISTONS ARE AT TDC, they will contact the piston on this motor. turn the crankshaft gear forward or backward 1/4 turn off of TDC when you move the cam pully. Once this is done, you will need to set the camshaft pulley to a poorly designed mark on the cylinder head. (it is the corner point of the casting for the cylinder head, it forms a triangle at about the 10:00 position when looking at the cam pulley). Install your belt, it will be tight even with the tensioner pulled back so making sure it doesn't cause either of the gears to move off their marks. Once it on recheck the timing marks upper (cam) and lower (crank), release the tensioner, put your other belt on and you're done. http://www.mivec.co.nz/tech/4G9x_Engine_Manual.pdf

If the crank is lined up to the mark, it is at TDC, meaning cylinder number 1 piston is at TDC.

Both cam pulleys should have marks, they just look a little different.
Here are the diagrams to help out.

You will need 2 5/16 drill bits. There is a 5/16 hole in each cam gear. With the crankshaft 1/8 turn off TDC, turn the cam gears so the hole is down. Insert the drill bit into the hole and move the gear slow until the bits slides into a hole in the rear timing cover. Do this to both cam pulleys. When you have both bits installed, this will lock the cams. Don't turn the cams with the crank at TDC, It will bend valves. Once you have the cams locked, turn the crank 1/8 of a turn back to TDC. Don't go the other way. The TDC mark on the crank should be a dot on the gear and a arrow on the rear timing cover. Then after everything is lined up, Install the chain,guides and tensioner. After everything is installed, Turn the crank two revolutions, and line the crank back up to TDC. If the timing is right, you should be able to insert the drill bits in each cam gear. Hope this helps.

Turn crank so that timing mark on front pulley is at 0 degrees.
Remove the timing cover and you should see a mark for the cam to line up with.
You want the cam lobes on No.1 cylinder to be pointing away from the followers wether they be rockers above cam or buckets below. This will be the compression stroke.
Once the cam timing is set you can recheck the distributor. It should point to No.1.

The keyway and or the dot on the crank should be line at 12 oclock. You will see a point on the oil pump housing to go by. On the camshaft the pointer will be at 12 oclock also. Use the O on the camshaft to the top at mark. Be sure to look at the dist. roter to make sure that it is pointing at the #1 spark plug wire. I could get 180 out of time. If you do it right it should start up right away. then you can use a timing light to finish it.
Good Luck [email protected]

this is for the crank pulley timing marks .....