New engine and there is no spark from coil, no start

Hi,

The first thing that comes to mind when you say the engine is new, is a ground for the coil. Take a look at pic 1. The ground for the coil driver is on the right rear cylinder head. Check that and see if you have a good ground. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-wiring

Let me know what you find or if you have other questions.

Take care and God Bless,

Joe

That got it. Thanks guys, you're awesome.

When it rains heavily my 99 tahoe won't start. I checked today and am not getting a spark. I have put in a new: distributor cap, rotor, plugs, wires 3-4 years ago(they look ok). Where do I look next? Only when it rains do I have this problem?

Pull coil wire see if spark is present. Fuel pump stay running?

Yes,
I got a strong spark from the coil.

The fuel pump comes on when I put the key in the on position and then shuts off. It sounds like it always has. I checked my fuel pressure and had 65lbs.

Let's try an experiment on a non rain day truck starting good spray water on the Cranksensor see diagram

. if good spray around DIST and coil see if you can make it fail then we'll no what to fix.

No spark at the plugs?

This sounds like a classic crankshaft angle sensor here is a guide to help you get back on the road.

https://www.2carpros.com/articles/crankshaft-angle-sensor-replacement

Please let us know what you find.

Cheers

Worked thanks!

Car will not start. I got it in non-running condition. There is no spark from the distributor or coil. What coild be the most likely cause?

Check fuses underhood, crank and cam sensors and scan for codes. See if coil puts out to dist if it does may be rotor/cap problem.

Also see if play in rotor if there is pull dist out and see if gear is torn up if it is replace dist.

Checked all the fuses and relays. Have power to the coil but none going to the distributer. Checked the Cam sensor and it tested ok. Has new cap, rotor, plugs and wires.

Check where I've pointed to in pic see if pink wire leading to dist has power. If not check fuse 1 in underhood box and then see if it has power coming out of box it may be a poor connection in fuse box that powers the cam sensor in dist so car wold not run with no power to it. No codes I take it.

I checked the wiring going to the coil and I have power going to the coil but none coming out. I bought a CP9125 OBD2 pocket scanner and it gave no codes. I checked the cam position sensor with the ohm setting on my voltage tester and it tested ok.

I checked the pink wire going to the cam positioning sensor and I have 11.5 volts

Is the coil putting any spark out at all? Also have your ignition control module checked autoparts can do t hat. It's on right side rear of engine by coil. Also check your crank sensor as those are the tow biggies for no starts and runs. You might try pulling crank sensor out and cleaning it sometimes that does it. Also check coolant sensor should have 5640 ohms at 50 degrees an d177 at 212 will be more the colder it is. Otherwise I dont' know what to tellyou.

Tried checking the coil for spark by using the ol screwdriver trick and got no spark at all. Going to try replacing the coil and having the ignition controle module tested. Thanks for all your help so far. Atleast I know I am working in the right area to try and solve the problem.

Primary should be.1 ohms and secondary shold be 5000-25000 ohms.