9 replies to this topic

[86hfsprint]

so i recently picked up a stock 86 crx hf and it had a few bent valves so i tore the top end apart and had the head machined and rebuilt. I put it all back together and the car wont start. It is getting fuel and has spark but it just kinda sputters when cranking and never fires up. I looked for vacuum leaks and found one but it still doesnt fire up

Any ideas?

[chedda_j]

Timing out 180 degrees.

[1985 CRX SI]

It is impossible to have the cam timing out 180 degrees, so that must mean plug wires.
I would double check the firing order.
Jeff

[86hfsprint]

i will have to double check the wires or maybe the coil wire is bad. The timing is definitely not out crank was tdc and the cam was aligned properly using the timing marks on the drive gear

[86hfsprint]

ok so i took another look and on the bottom of the dizzy there are i believe 5 wires 1 blue, 1 black, 1 yellow, 1 black + red, 1 yellow+ black. Two of the wires the yellow and the blue are snapped off right at the connector so i have a spare housing im going to swap all the new wires, cap, rotor etc onto and see if that corrects the problem. Hopefully it does because if not ill be back asking more questions. Ill have to do it tomorrow theres 60mph winds here in elspaso and i was being sandblasted outside just to find that issue.

[chedda_j]

The cam marks line flat/level with the head. Your piston reaches tdc twice in a four cycle motor. So it in deed can be 180 degrees off. You can be firing on the exhaust stroke rather the compression.

[chedda_j]

Sorry crank out 360

[1985 CRX SI]

I agree the plug wires can be 180 out but not the Cam in relation to the crank.

Jeff

[EuphoricBlue]

Sorry crank out 360

Where is the Picard face palm picture when you need it? XD

Sorry man, they are right. You can not have the cam out 180 degrees out, an up stroke is an up stroke. (or the crank 360, that just puts the crank back in the same spot)
On many SOHC cars it IS possible to have the distributor out 180 degrees which would fire the plug on the exhaust stroke, but not on ours since the distributor is keyed to only mate one way to the cam.


OP: If fixing those severed wires doesn't get it running, check your cam timing again.
While being out exactly 180 degrees on the cam doesn't matter, anything else does. And these cars are horrible for being off a tooth after installing a timing belt.

[86hfsprint]

ok i see now what u meant about being 180 degrees out on the distrubutor. I thought of this yeasterday as well and tried switching the distributor positioning 180 degrees relative to the cam and still the same issue. I am going to swap distributors and the wire harness today and see it that fixes the issue