Pdlewis
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| posted on 2/6/07 at 07:34 PM |
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Pinto Timing
Hello,
Following my earlier thread as to whether i should change my head gasket i bit the bullet and did it. all seems to have worked ok (it doesnt fire
water out the header tank when you turn the engine over  )
I followed the steps in the haynes manual but think i have mucked up as now it wont start. I think even with all my care i have managed to mess up
setting the timming up.
Can anyone suggest how i could rectify the situation? i know it may sound a bit of a dumb question but this was my first go at anything major to do
with the engine
Cheers
Paul
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rusty nuts
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| posted on 2/6/07 at 07:42 PM |
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Turn crank to TDC. IIRC the lats ? timing mark when turning in direction of rotation. Camshaft pulley mark should line up with the dot in the head (6
o'clock?) If you have a Bosch distributor there is a line scribed into the top surface. Rotor arm should be pointing to this mark . With the
engine timed up as above it should be close enough to get it running, ignition timing is best done with a strobe when running. Alittle tip , when
dismantling use some bright coloured paint to highlight the timing marks and the pulleys . Makes retiming a lot easier.
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mark chandler
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| posted on 2/6/07 at 07:48 PM |
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If you have alligned the crank and cam pulleys distributor correctly then it should run.
As it does not then I suspect that something is 180 degrees out, the cam only turns once for two of the crank, same for the distributor so its easy
enough to do.
So.....
Turn the engine to TDC, pull off the oil filler cap and see if the first two cam lobes are pointing skywards, if so pop off the distributor cap the
rotor arm should be pointing at no.1 plug lead.
If not pluck out the distributor, turn the engine over 1 full turn then pop the distributor back in, alternatively swap the leads around and try
again.
Regards Mark
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caber
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| posted on 2/6/07 at 07:50 PM |
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remember cam rotates twice for each rev of the crank so if it doesn't go cam could be 180 degrees out.
Caber
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daviep
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| posted on 2/6/07 at 07:51 PM |
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You need to tell us how you have timed it?
Here's simple way to check.
Check engine is at TDC No.1 firing, Use a screwdriver down No.1 sparkplug hole to feel the piston coming up to TDC, mark the crank pulley just as you
feel the piston stop rising. Go past TDC and mark the pulley just as it stops moving (coming up the other way) Now set the pulley half way in between
the two marks. This is No.1 at TDC (don't move it again)
To check No.1 1 is firing remove the rocker cover and set No.4 valves to be on the rock (both inlet and exhaust open an equal amount). This should be
the cam in the correct place in relation to the crank.
Next pop of the dizzy cap and check to see that the rotor arm is pointing towards where the contact for No.1 plug would be. (there will be a mark on
the distributor looks like a hacksaw cut).
Check plug leads are on in the correct order.
After fitting the belt turn the crank two revs by hand to check nothing is contacting.
There will be marks for timing but this method can be used to back up the marks.
Sorry I'm so long winded!!!
Davie
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daviep
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| posted on 2/6/07 at 07:54 PM |
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God I type soo sloow!
Cam rotates at half engine speed
Davie
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Pdlewis
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| posted on 2/6/07 at 07:58 PM |
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Thanks davie
Thats what i was after
cheers
Paul
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