Thread: wont start!

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Denny thanksfor the input. I get frazzled after working all day and trying to get this truck going at night. My patience is nowhere where it should be and it helps to have a voice of reason to slow me down.
Chris

Originally Posted by DennyW

No problem Chris. That's why I hang around on here, to help if I can.

If you want, we can take a break, and when you get home tomorrow, rest a little, eat something, and we can pickup from there.

Do you know how to find TDC ?

We can start from that point. Take the one valve cover off so you can see the valves moving on the number one cylinder side. And, if you can set it up so you can rotate the engine, or if you want to bump it over, that's ok to.

Well the battery wouldn't take a charge.......so down to the parts store I went. they tested it and replaced it under warranty. I ran a compression check on the good battery and got 160 psi. Much better! I replaced TPS and CTS for giggles and now I am going to go try again with good plugs and see what happens.

I have cranking pressure now but there is still something going on with the ignition. I tried a hit of either. I am getting backfire through the TBI. At some point a spark must be getting into the manifold while a valve is open? With 160 psi my valves should be timed correctly......so firing order check?

Could be a vacuum leak too?

they are in order 1-8-4-3-6-5-7-2 clockwise. TDCC rotor pointing to #1 plug.
I pulled them all off and reinstalled them to make sure. Cylinders are once again flooded and I am lighting off pooled fuel in the exhaust. What gives?

I burned the plugs off until the fuel was gone and just a pure flame remained. I had my wife crank the motor while I put a timing light on it. I rolled the gun ahead to 15degrees advance and adjusted the distributor accordingly. I still do not get even a hit from any cylinder but the collector seems to light off just fine. Even with the TBI's unhooked

If you have compression, and fuel with a properly timed cam and spark it should light off. Are you by chance 180 out of phase?

Originally Posted by jerry clayton

If you have compression, and fuel with a properly timed cam and spark it should light off. Are you by chance 180 out of phase?

with existing cranking compression I am assuming that you are meaning the distributor. I have checked the rotor position quite a few times now. TDC #1 cylinder both valves closed and a slight drag on pushrods. I have done everything but hook the wires up 180 out of position.

well Denny I truly wish you could. I am taking a breather to regroup. here is a recap of where I am at this moment.
160 psi cranking compression- cam timing is enough for engine to run.
fresh battery
fresh plugs
new distributor, cap, rotor, coil as of Sunday AM.
Replaced CTS
Replaced TPS
Crank aligned with TDC and both valves closed (compression stroke)
rotor pointing to #1 terminal
wires 18436572
timing set to 12 BTDC (currently) using timing light while cranking and wire disconnected
getting spark while cranking
checked for trouble codes and found nothing.
ENGINE STILL WILL NOT START.

move the wires 180

You don't have to move them all----just change 1 and 6---see if you get it to pop on those two cylinders

Well I figured out why it wouldn't start.......coolant leak into 5/7 and 2/4. It turns out that I used the wrong intake gasket which blocked off the passage at the end of the head. Fuel doesn't like to ignite if it polluted...........
Sensors were on the fritz due to a low amperage draw through the lighting circuit but I still have to locate it.
Lost a week of frustration but I have a lesson learned.