Engine swap and now no start - Page 3 - Harley Davidson Forums: Harley Davidson Motorcycle Forum

boatnut · 10-07-2009, 10:45 PM

Hi guys, today we set the front cylinder on TDC using plastic "feeler" in spark plug hole and compression stroke ( piston on way up and got a lot easier to turn back wheel when on top). We took this to mean not turning against valve train thus at actual tdc. Then pulled CKP. Sure enough the cut out was right there along with the blue dot. Kinda wished it hadn't been, would have solved problem.
Spoke with senior tech at Hals Harley on phone (motor came from them). He listed all the things to check, (same as we had done already), and then said hook it up to a scanalyser. Vampire cycles ,the indy doing this for me, actually has one.
Well it will not communicate with the Dynatek tc88 ignition.
Called Margo at Jims. She said I have to install the Jims suggested ignition ( Screamin Eagle HD-32704-01 ).
Ok, even though I can't for the life of me see why if a proven ignition like the Dynatek and a completely stand alone sytem like the Thunderheart will not work the mere words "Screamin Eagle" will magically fix it I have ordered one.
What it will do is give us the ability to "scanalyse" the system and hopefully find out whats wrong. Unfortunately it also gives me an ignition that is old technology, it's even obsolete from Harley. Had to get from Jims.
Looks like I have two ignition systems for sale! Never been ran lol...
The CKP in it is a known to be good unit as we took it out of my running 88 twin cam. Every tech I have spoke to says no grey area. If we are getting spark, CKP is good. Bad CKP means no spark. Nothing inbetween. On hold now waiting for part to be delivered to the great white north. Will update with any new developments.

SCHMIDTYS · 10-08-2009, 07:56 AM

Actually it's a good thing the mechanical timing is correct , means the engine can stay together ! Also very possible the Dynatech ignition is at fault , maybe 2 wires crossed in the plug connect or something . You'll know for sure when you plug in the SE ignition , if it starts and runs ! Good luck and keep us posted .

Badassbrutus · 10-08-2009, 09:11 AM

WF it is possible just seen another problem on another forum Dual coils wouldnt fire brand new.Put another new set on still wouldnt fire,Put and old set on fired.WTF 2 new sets of Dyna coils junk! Must of made em on friday afternoon...lol

Rockerbox1 · 10-08-2009, 09:18 AM

I don't want to hear that.....I have a dynatec 3ohm coil on order for my ironhead

gtrman66 · 10-08-2009, 09:55 AM

I had a similar problem once and it was the same as Vinnie on OCC, pushrods were adjusted wrong. Just a thought.

boatnut · 10-10-2009, 11:22 PM

Ok guys, just a thought...... thinkin I'll head down to the shop Monday with my multi-meter and check the "pin placement/wiring" of the new factory sub harness I installed? Also plan to replace the CKP and re-wire it all the way back to the ignition. This is the only section of wiring that hasn't been replaced. Maybe got pinched/squished when motor swapped? I know,I know, I have spark... If this wiring or sensor was bad/damaged there'd be no spark. I gotta try somethin while I wait for the obsolete/out of date ignition!!! What really pisses me off is that we would normally have pissin rain by now. It's god damn perfect out!!! I'll get this fixed and it'll be pissin......

SCHMIDTYS · 10-11-2009, 07:22 AM

Quote:

Originally Posted by boatnut

Ok guys, just a thought...... thinkin I'll head down to the shop Monday with my multi-meter and check the "pin placement/wiring" of the new factory sub harness I installed? Also plan to replace the CKP and re-wire it all the way back to the ignition. This is the only section of wiring that hasn't been replaced. Maybe got pinched/squished when motor swapped? I know,I know, I have spark... If this wiring or sensor was bad/damaged there'd be no spark. I gotta try somethin while I wait for the obsolete/out of date ignition!!! What really pisses me off is that we would normally have pissin rain by now. It's god damn perfect out!!! I'll get this fixed and it'll be pissin......

You can test your ckp ... at the connector check the resistance between the pins , should read approx. 1-1.5k ohms with no opens or shorts .

DCLXVI · 10-12-2009, 12:19 AM

Since you say you have spark and there is fuel the only thing basic left is compression. Put a guage on it and see what it reads. I know it's basic but sometimes it's the simple things that get you. If compression is low then I would look at valves too tight or cam timing.

AlienX · 10-16-2009, 09:01 PM

cranking ac voltage output of any inductive 2 wire senor is min .5 ac volt to trigger transitor, the difference in the boxes maybe the trigger slope, Pos or neg. thats the difference in car ignitions, even still with the same slope triggers different boxes will change the base timing, not enough to no start but change perf. just a posible diff in the boxes

AlienX · 10-16-2009, 09:03 PM

you obviously have .5 ac volt to get hot blue spark