Right engine will not fire

[shaner19]

Changed spark plugs last weekend and right engine will now not fire. Ran through all diagnostics but still nothing. Batteries are fine and I get power. Left engine is fine.

Checked spark on plugs and no sparky

 

[djetok]

Changed spark plugs last weekend and right engine will now not fire. Ran through all diagnostics but still nothing. Batteries are fine and I get power. Left engine is fine.

Checked spark on plugs and no sparky

Did you check your lanyard. That will cause no spark. It's weird it's not both though.

 

[shaner19]

Checked the lanyard too. It’s weird the engine fired up before I changed plugs on it

 

[djetok]

Only thing I can think of is make sure the connectors on plugs are fully seated. I would think all 4 would not be seated. I would probably look through the harness on that engine. I might also disconnect the battery and reset the computer. If you have your old plugs you might put them in and try it.

 

[shaner19]

Ok took all spark plugs out, disconnected all batteries and checked old plug Darn.....

 

[capt]

I had this prob with my port engine. Found out the clean out plug kill switch was not being pressed all the way down.

 

[Scottintexas]

Just to confirm
The starter engages and the engine spins it just doesn't fire

 

[Jgorm]

Did you put in the right plugs with the right top on them?

 

[shaner19]

Just to confirm
The starter engages and the engine spins it just doesn't fire

Correct

 

[shaner19]

I had this prob with my port engine. Found out the clean out plug kill switch was not being pressed all the way down.

Checked that, they were being pressed all the way down

 

[Scottintexas]

If you've confirmed no spark at the plug the next easiest thing is going to be to check the kill switches

 

[Cobra Jet Steering LLC]

also check the throttle positioner just move the throttle back and forth a few times then see if it fires

 

[Wisefam22]

Any update on this? Friend is having fame issue

 

[shaner19]

I have checked all the items suggested so far to no avail. I have a sneaky suspicion I knocked something loose when servicing it but I can't see anything loose. Looks like a trip to the mechanic I guess. I'll post here the results.

Thank everyone for your suggestions. No lake today unfortunately.

 

[Gym]

Have you checked your ECU fuse?

 

[shaner19]

Have you checked your ECU fuse?

I have not, but I will be checking this tomorrow morning. Thanks for the tip.

 

[Wisefam22]

@Gym I am going to look at friends tomorrow same issue their port engine wont star though.. ecu is black mounted box at back of compartment correct? Will there be multiple fueses or just one?

 

[Scottintexas]

The round cap, not numbered that covers [HASH=455]#7,[/HASH] I think there is just one, a 20a mini fuse li for a car, hopefully there is a spare next to it,

https://jetboaters.net/threads/forrest-gump-is-smart-i-am-not.5602/[HASH=153]#post[/HASH]-96417

.

 

[Scottintexas]

and be sure to view this while you diagnose it,

https://jetboaters.net/threads/engine-wont-start-debug-list-engine-codes-and-battery-voltage-states.1835/

.

 

[Scottintexas]

@Wisefam22 what year and model boat are you going to look at ?


.