2005 90hp Yam no spark.

[jerryjerry05]

2005 90TLRD 1017108
Guy calls and says his motor has no spark.
What's the first thing I should be looking for?
I haven't looked at it yet, probably tomorrow.
I have a DVA
Thanks

 

[boscoe99]

First thing? Probably the kill switch.

 

[flyingscott]

First thing I I would check is the lanyard, then I would check spark. If those aren't the problem Then find a CDI ignition guide and do the tests.

 

[jerryjerry05]

I printed the test procedures for the ignition system.
Stator/trigger etc.

 

[boscoe99]

Yams don't use a trigger. Either a pulser coil or a crank position sensor initiates electrical discharge from the CDI assembly. Sometimes both are used.

 

[jerryjerry05]

This is what I printed. Says Trigger tests???
For an older motor.

Read from Read to OEM Reading CDI Reading DVA (connected to pack) White/Red Trigger wire White/Yellow Trigger wire 280-430 ohms 280-430 ohms 2.5 Volts Minimum White/Black Trigger wire White/Green Trigger wire 280-430 ohms 280-430 ohms 2.5 Volts Minimum White/Red Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Black Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Yellow Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Green Trigger wire Eng Ground Open Open 2.5 Volts Minimum Brown Stator wire Blue Stator wire 840-1260 ohms 600-800 ohms 85 Volts Minimum Brown Stator wire Eng Ground Open Open 85 Volts Minimum Blue Stator wire Eng Ground Open Open 16 Volts Minimum Blue Stator wire Red Stator wire 65-130 ohms 10-20 ohms 16 Volts Minimum Red Stator wire Eng Ground Open Open 30 Volts Minim

 

[jerryjerry05]

COIL, PULSER 6H0-85580-01-00 This motor uses a coil, pulser.(bosco99) Any idea how to test it? What's the specs? or where can I find them??? Thanks

 

[boscoe99]

COIL, PULSER 6H0-85580-01-00 This motor uses a coil, pulser.(bosco99) Any idea how to test it? What's the specs? or where can I find them??? Thanks

The specifications and the test procedures are in the applicable Yamaha service manual. LIT-18618-02-66.

 

[99yam40]

This is what I printed. Says Trigger tests???
For an older motor.

Read from Read to OEM Reading CDI Reading DVA (connected to pack) White/Red Trigger wire White/Yellow Trigger wire 280-430 ohms 280-430 ohms 2.5 Volts Minimum White/Black Trigger wire White/Green Trigger wire 280-430 ohms 280-430 ohms 2.5 Volts Minimum White/Red Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Black Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Yellow Trigger wire Eng Ground Open Open 2.5 Volts Minimum White/Green Trigger wire Eng Ground Open Open 2.5 Volts Minimum Brown Stator wire Blue Stator wire 840-1260 ohms 600-800 ohms 85 Volts Minimum Brown Stator wire Eng Ground Open Open 85 Volts Minimum Blue Stator wire Eng Ground Open Open 16 Volts Minimum Blue Stator wire Red Stator wire 65-130 ohms 10-20 ohms 16 Volts Minimum Red Stator wire Eng Ground Open Open 30 Volts Minim

I would think that this did not come out of a Yamaha service manual.

Where did you find this?
some kind of aftermarket thing maybe

CDI electronics use to have troubleshooting info online for a lot of different brands of motors and they made aftermarket CDIs for them also

 

[jerryjerry05]

outboardignitiondotcom is where I got it from.
They sell CDI aftermarket parts.
CDI no longer has a free web site for repairs.

 

[jerryjerry05]

99yam40 if you have the manual?? post the right info?

 

[99yam40]

I have no manual for a 90.


Seems that sight sells CDI electronic aftermarket parts, but do not list any newer for the 90 along with the troubleshooting guide from CDI

I guess they used different names for parts back in the old days
now a days they use names like the CDI, lighting coils, charging coils and pulser coils

 

[flyingscott]

99yam40 if you have the manual? if this is the 3 cylinder 90 2 strk, as I recall it uses a pretty standard CDI ignition. No lighting coils on that motor. Also no crank sensor on a carbed 2 strk. What you have for diagnostics may work. That motor pretty much stayed the same through out its life.

 

[99yam40]

Looking at part breakdowns the 2 stroke 90 used a crank sensor since 92.
from what I remember seeing they used 2 pulser coils and one crank sensor to tell the CDI when to spark the plugs.
My 99 C40 uses 3 pulser coils to do that
they do not show separate lighting and charge coils on the 90, just sell a stator assembly that contain those coils.
My C40 shows you can buy and change then separately

 

[flyingscott]

Looking at part breakdowns the 2 stroke 90 used a crank sensor since 92.
from what I remember seeing they used 2 pulser coils and one crank sensor to tell the CDI when to spark the plugs.
My 99 C40 uses 3 pulser coils to do that
they do not show separate lighting and charge coils on the 90, just sell a stator assembly that contain those coils.
My C40 shows you can buy and change then separately

Show us this crank sensor.

 

[boscoe99]

 

[boscoe99]

Looking at part breakdowns the 2 stroke 90 used a crank sensor since 92.
from what I remember seeing they used 2 pulser coils and one crank sensor to tell the CDI when to spark the plugs.
My 99 C40 uses 3 pulser coils to do that
they do not show separate lighting and charge coils on the 90, just sell a stator assembly that contain those coils.
My C40 shows you can buy and change then separately

Only one pulser coil.

 

[flyingscott]

I don't think that crank sensor does what you think it does. Hint what else showed up in 1992 Yamahas. But I do like how you and your dad can't do anything by yourselves.

 

[99yam40]

Only one pulser coil.

I though they used one each for #1 and #3 with #2 being created with input of the CPS.
Maybe that was some other motor

 

[boscoe99]

I though they used one each for #1 and #3 with #2 being created with input of the CPS.
Maybe that was some other motor

It is difficult to keep up with what is doing what within any given Yam.