puffs out the intake- no run
09-04-2006, 07:07 PM
#1
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puffs out the intake- no run
We checked the timing tonight. 77/924. we lined the crank pully up on the mark, the cam gear was also in line, the distribtor was way off.
we pulled the dist and put in back in.
we checked the fire order, it was wrong.
but still no go.... we have fuel and spark
I noticed we have negative vaccume form the intake.....almost like the exhaust valve is open on the power stroke? does this engine bend valves on a TB failure?
we pulled the dist and put in back in.
we checked the fire order, it was wrong.
but still no go.... we have fuel and spark
I noticed we have negative vaccume form the intake.....almost like the exhaust valve is open on the power stroke? does this engine bend valves on a TB failure?
09-05-2006, 10:04 AM
#3
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No worry of bending the valves. But as I think was pointed out on the 924 forum - you need to be sure the engine's turning the right way. If you put a 924 Turbo or 944 starter in a 924 NA, it'll spin the engine the wrong way (but otherwise bolt up). That would also explain why the firing order might seem wrong!
As mentioned, should be turning clockwise I believe when cranking while looking at the front of the motor.
As mentioned, should be turning clockwise I believe when cranking while looking at the front of the motor.
09-06-2006, 01:36 PM
#5
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no start
well i went out and dodged the raindrops. the engine is turning the correct way. I will buy a timing light and check the timing this weekend. thanks for the help 
09-07-2006, 09:02 AM
#6
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Here's another evil thought. It is possible, though really stupid, to install the flywheel incorrectly indexed on the engine. Naturally this would lead to the cam not being timed correctly with the crank. The two ways that come to mind to verify this timing would be to ensure that the timing marks at both the front and rear of the crank line up. We use the rear mark (on the flywheel) for timing light, because that is more accurate; the front mark (notch on pulley lines up with pointer on oil pump) could be used to give a sanity check. The front pulley has a roll pin in it to align, so is unlikely to be off.
The other check is of course to monitor position of the #1 piston through the spark plug hole and confirm when it is physically at the top of its stroke.
Last thing would be to again confirm correct firing order plug wires on cap.
The other check is of course to monitor position of the #1 piston through the spark plug hole and confirm when it is physically at the top of its stroke.
Last thing would be to again confirm correct firing order plug wires on cap.
