No spark to my 45hp chrysler

[desanto7]

I have 45hp chrysler alternater outboard mod# 457HH ser# 4688. I have no spark coming from either plug. Bottom coil on side of engine has three cracks on it that i can see. Everything has power and neutral switch works. I think it has a magneto ignition. If one coil is bad does it effect the other one? What else could i check? Any info would help, new to boating, thanks

 

[wickware]

Re: No spark to my 45hp chrysler

There has to be some better experienced Help Coming Soon!! Meanwhile:

1. Other than the cracks in the coil, what other recent history do you have on the engine?
Was it running fair or fine before now?

2. Have you checked for 12 V power going to your coils with the switch in the on position?

3. Have you checked the appearance conditions and proper gap of your points and magneto appearance?
No burned/pitted points, a .20 gap (I think, at the highest point or TDC,Help!), clean stable magneto?
This means pulling the flywheel, I could be getting too for ahead before better help arrives. Help!!

I have a 35HP Chrysler 71 or 73 (w/o alternater) and I find it reasonable to troubleshoot if you have basic small combustion engine knowledge and experience.

If the points are bad, is there an electronic ignition kit (reasonable in cost) that will serve you better than the points? That is saying a lot, because I have replaced my points once in 25 years on my engine.

Good Luck,
Joe

 

[wickware]

Re: No spark to my 45hp chrysler

Oops! on the .20 point gap. It should be .020 if the MFG spec.

Joe

 

[desanto7]

Re: No spark to my 45hp chrysler

Engine was running fine so they said who i had bought it from. I got to new coils put them in and got nothing. So i pulled the flywheel checked the points and from what i could see they seem fine. But now when i turn the ignition to the on position the one coil gets hot and it goes to the one point that smokes when its closed. the smoke comes from the one point when its in the closed position. I have 8 wires that go to the key ignition, maybe i have somthing hooked there. purple white blue orange green yellow black and red. white purple and black were just hanging when i got the boat.

 

[desanto7]

Re: No spark to my 45hp chrysler

Engine was running fine so they said who i had bought it from. I got to new coils put them in and got nothing. So i pulled the flywheel checked the points and from what i could see they seem fine. But now when i turn the ignition to the on position the one coil gets hot and it goes to the one point that smokes when its closed. the smoke comes from the one point when its in the closed position. And the negitive terminal on the battery gets pretty warm as well. I have 8 wires that go to the key ignition, maybe i have somthing hooked there. purple white blue orange green yellow black and red. white purple and black were just hanging when i got the boat.

 

[wickware]

Re: No spark to my 45hp chrysler

I feel "Real Experienced Help And Specs/Info are Coming". BUT! Are you saying you never went for a test ride in the Boat before purchasing? If so, were there any personal or written guarantees that the engine would run.

It sounds like you are giving the situation your best now. I feel you and the seller did not if you all did not take a test ride or some before the purchase. Showing a product's condition eliminates some of the most basic questions.

Joe

 

[Frank Acampora]

Re: No spark to my 45hp chrysler

White is tach signal so may not be used. Purple is an A/C tach signal and is not used. Black is a redundant ground and can be used to ground gauges etc, but need not be used.

Yellow is start, Orange is overheat indicator switch, BLUE is power to the coils and must be connected to the "I" terminal on the ignition switch. RED is battery power and must be connected to the "B" terminal on the switch. Green is choke and is connected to "C".

Blue wire connects to the POS side of coils. White and white/grey connects to the NEG side. Power flows when the points close. This generates a magnetic field from the primary windings. It stops when the points open and the magnetic field generated collapses through the secondary winding of the coil, thus generating a high voltage pulse which can jump the sparkplug gap.

 

[desanto7]

Re: No spark to my 45hp chrysler

Thats great info thanks alot. Iv got all that hooked up correctly. The one point when it closes it makes a connection but does not sit completly flat. Will that affect the connection and can i file it down a bit to sit completly flat. When it closes now it smokes from the connection. Maybe i should replace that point and condenser? Would that affect the spark to pluggs. thanks

 

[desanto7]

Re: Should i replace the points and condenser?

Re: Should i replace the points and condenser?

Thats great info thanks alot. Iv got all that hooked up correctly. The one point when it closes it makes a connection but does not sit completly flat. Will that affect the connection and can i file it down a bit to sit completly flat. When it closes now it smokes from the connection. Maybe i should replace that point and condenser? Would that affect the spark to pluggs. thanks

 

[duanehepting]

Re: No spark to my 45hp chrysler

Hi i have 45 chrysler as well with the same problem. When i connect the battery one coil heats up. Motor was running fine on one cylinder lacking much power of coarse, so I looked at the points and it looked as though one had a very small gap and one was at about.018 for gap. Anyway I thought I would set the gaps to the same at least both .018. Well now the engine wont even start. Does any body know if the points are grounding out somewhere(is there a common place this happens?) From what I can see every thing looks fine, very frustrated. The only thing I know for sure is that the only thing I have to do is connect battery and coil heats up plugs diconected doesn't make a difference and engine is not running and key is in the on position but not starting position.

Can anyone Help please Thanks Duane

 

[duanehepting]

Re: No spark to my 45hp chrysler

I forgot to mention that both plugs have spark but the one with the heating up coil has a very weak spark thanx Duane

 

[wickware]

Re: No spark to my 45hp chrysler

duanehepting,

Are you setting the points to the proper gap (.018, .020 or etc.) with the cam lob in the correct position (TDC, before TDC or etc.)? I tried to guess at the points setting at the address below. Plus, I tried to send an attachment to help. A good top view of the Mag ignition system, good specs and instructions are needed. Where can I get a good repair manual on CD for my 35 HP Chrysler? I remember some basics from a good paper back manual that was not returned 15-20 years ago. Good specs and instructions are the best vs guessing.

http://forums.iboats.com/showthread.php?t=326058&highlight=setting+chrysler+points

Joe