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The engine is a free running type so bent valves should not be the problem. Recheck the timing marks on the camshafts and crankshaft. If you are one timing belt tooth off, the engine could run but run rough. With the number 1 cylinder piston at top dead center, the camshaft marks should be lined up with their "TDC" marks and the crankshaft mark should be at 0 deg.
If the distributor was removed during the belt replacement, make sure it is in time with the crankshaft timing mark. When the No. 1 cylinder piston is at top dead center, the crankshaft timing mark should be on 0 deg. and the distributor rotor should be pointing to the number 1 terminal on the distributor cap at the same time.
hi from uk the camshaft cog has a small hole drillinh between the outer toothed and central securing bolt at TDC number 1 cyl this hole must be at top of cog 12-oclock position ? at this point if you use a mirror and view through this drilled hole you will see a V cut in cyl head at this point cam is TDC number 1 cyl firing assume you have crankshaft lined up already ? if you need to rotate the camshaft to align marks ? turn crank back a fw degrees then you will be able to rotate cam without valve contact with pistons then reset crank marks up make sure belt is fitted from crank in anticlockwise rotation hope this helps ?
1- Take off all spark plug so you can turn the crankshaft easily to align Top Dead Center (TDC) .
2- Take off the engine cover to see the notch mark on the cam shaft.
3- Turn the crankshaft until the mark on the pulley match with the 0 on the timing mark. At this point if the mark on the camshaft all align then you are good. If it is not then you have to take off the timing belt to do the correct alignment as following items # 4 to 7.
4- Turn the crankshaft until the Piston # 1 is at top. Put in a screw driver to make sure it is at the top.
Make sure the Crank shaft at 0 mark. If not, keep turning until it is at desired position.
5- Turn the camshaft to align at the mark in the straight line with the crankshaft mark.
6- Make sure the camshaft lobe is not pressing to open the intake or exhaust valve for piston # 1. This is to ensure it is at ignition stage: Piston is up, all valves closed.
7- Once everything is aligned at TDC, put the timing belt on. Tighten the tension adjuster, then you are good to go.
well not sure exactly why it wont line up use something to turn the crank and cam to appropiate position start sliding crank gear until cam gear is touching then start to push both at same time make sure your crank key and cam pin are bothin place
On many OHV pushrod engines, the crankshaft sprocket is installed on the crankshaft nose and the crankshaft is rotated to position piston #1 at TDC. At this point, a mark stamped onto the crankshaft sprocket is pointing directly upward (toward the camshaft).
The camshaft sprocket is then temporarily bolted to the cam and used to rotate the cam until a mark stamped on the cam sprocket is pointing directly downward (toward the crankshaft). The sprocket is then removed from the cam (without allowing the cam to rotate).
The timing chain is looped over the cam gear, the mark on the cam gear is positioned directly downward, and the chain is looped around the crankshaft sprocket. When the cam sprocket is attached to the cam, the timing marks on the crank and cam sprockets should be pointing toward one another.
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.
set the timing marks on the crankshaft and the cam marks head to head the marks should be with the cylinder number 1 an tdc top dead center on the compression stroke then adjust the cam so the marks are aligned remember the number 1 piston has to be @ tdc and the crank and cam marks are lined up ok bye for now good luck with it