JLG 40ht No spark no fuel

got a 97 JLG 40ht
gas / propane
Ford 4 cyl electronic ignition

what I know

has not been ran for 2 plus years - ran when parked
what I have done - starred at it lol. pulled air intake tube - sprayed starting fluid
pulled 2 plugs - can feel compression - spayed starting fluid in them
nothing during any cranking
To crank - switched to ground controls, tunred on master key, push button or jumping starter

I have figured out I have no spark as well - all the wasted starting fluid lol

downloaded all manuals JLG has for it...not alot of help.

are there ways to bypass things to discover bad components- where to start? there appear to be two (2) pcm style looking boxes but am not finding alot of them available which makes me question their likelihood of being bad...

the unit is very clean for sitting and does not appear to have been altered at this time - as well, there does apprear to be some opened wires where other had probed on it, but the guys i got it from... explained the guy who was troubleshooting it fell sick and died, so they got insight for me...

Not familiar with this machine. Check cap,rotor, wires?

there is no cap rotor - it is electronic - I am dead no spark - no test light voltage going to the electronic distributor.

Ignition control module appears replaced
wiring appears upgraded
map sensor appears replaced

I say this because the original map sensor appears to have had a vacuum line that connected to the ICM but the new retroed one does not and has the vacuum line going to the map sensor. I have unwrapped all wiring to try and chase wires...all look complete....

another module is $550 ish and the complete module and wiring is just over $1000 - alot for a gamble, but it seems I should be getting more from the source to the module?...

anyone source a wiring diagram? I have downloaded all the pdf manuals. but they dont show engine wiring

I seem to recall quite a few people having similar issues with that same engine in lifts on several forums... I believe it's pretty much always attributed to the electronic module.... now with that said I don't know if the actual problem is hardware/sensors feeding the module or the module itself.... seem like I do remember one last year or so where it was found to be the crank sensor... or whatever ford calls it that tells the module when to spark.

Thanks for the reply

So it would be conceivable that the camshaft or crankshaft sensor would create a no spark situation. Is there any way to test them with a voltmeter or is the resistance that should be there noted some place in the manual? I'm just not that familiar with low voltage resistance etc

Hey guys - a report - changed the crank sensor and the coil pack - still no spark. Trying to narrow down wiring - not finding alot I understand. When the new wiring harness and ignition module was installed it appears to have a few plugs that are not used,,,firt question - am i missing a plug someplace ??? I have a 4 prong and a 5 prong not used and another that appears to be like a data port of sorts. once you move those out of the way- there are two (2) crank sensor colored wires - one set comes off the Ignition module wiring group and the other comes from the mid way plug connector that is part of the the "upgraded" wiring harness. short of that - there is the coolant sensor plug and I believe the connector with the vaacuume line on it. there are some other wires in the ignition module plub, but none of those are suppling 12 volts... I have swapped in and out relays. I am acheiving the spart test by grinding down a spot on an accessory bracket and used a pair of vise grips to clamp the spark plug to the frame. it serves as a gounding source for my multi meter...so with plug wire on I expect it should be a good ground source....

looking at the drawings........there is a 15 amp circuit breaker just for the ignition power. The way it is wired, the engine will still crank over (engage the starter) with no power to the ignition. Located this breaker and make sure you get power on both sides of it? Should be on the ground control panel someplace. Make sure that ignition module has a good ground too.

Was this ever resolved.

I have a Lift with no spark where is this 15 amp CB located wish we had a service manual THANKS

Are you throwing any codes.. I.E. yellow triangle on the panel ?? Second the grounds. Especially where it grounds to the engine. Jlg should have a supplement manual that deals with engine trough ford power products. If not you can find it online. The engine is used in a lot of products.