Weak spark in 1998 Seadoo GTX LTD

[Ziii]

Good Morning Friends.

Hope all are doing good. I recently bought Jetski 1998 Seadoo GTX LTD 951cc. The seller mentioned it was starting and misfiring. so I bought it hoping it to be a small issue to be fixed. the seller has changed the stator coil,starter. I did bought the new Ignition coil. the jetski cranks really well. when i crank i see very weak spark in spark plug tester. i think it tries to start but is unable to due to weak spark. when i put on the key i get 2 beeps. I want to check and get some clarification if its due to MPEM issue and is very expensive as well. please let me know if anyone had same issue and how it was resolved. I am new to this stuff.
Appreciate everyone's response.

 

[SIMPLEARKANSAN]

Pull off the spark plug boot. It twists back on. Cut off 1/4" of your spark plug wire to expose clean fresh copper. May fix your issue, can't hurt it for sure.

 

[Ziii]

Pull off the spark plug boot. It twists back on. Cut off 1/4" of your spark plug wire to expose clean fresh copper. May fix your issue, can't hurt it for sure.

Thank you for the quick response. I tried that as well yesterday but same weak spark.
it has new ignition coil , new starter and new stator coil. failing to understand why spark is weak.
Any pointers will be greatly appreciated

 

[SIMPLEARKANSAN]

Have you cleaned all your connections, ground, etc?

 

[Ziii]

Have you cleaned all your connections, ground, etc?

Yes i did clean battery connections and also ground terminals as well

 

[JJinSC]

Are the right spark plugs installed. They have to be resister type spark plugs.

 

[SIMPLEARKANSAN]

Make sure the end caps off of the old spark plugs aren't stuck up inside your spark plug boot and the new plugs aren't making good contact.

 

[Ziii]

Are the right spark plugs installed. They have to be resister type spark plugs.

I have resistor ones installed. Is there any specific spark plugs you recommend

 

[Ziii]

Make sure the end caps off of the old spark plugs aren't stuck up inside your spark plug boot and the new plugs aren't making good contact.

I installed the old end caps and has resistance as well

 

[wrench2ride]

check the both sides of the plug in the rear electrical box, sometimes the wire gets corroded and rotten inside the plug so take the plugs apart for the electrical box to check for corrosion, check the resistance of the wires from the electrical box back to the Mpem
check the resistance of your ground of the electrical box to ground also

 

[Grim]

The Spark plug for this ski is NGK BR8ES

 

[JJinSC]

I have resistor ones installed. Is there any specific spark plugs you recommend

The Spark plug for this ski is NGK BR8ES

Grim gotcha, NGK BR8ES plugs

 

[Ziii]

i would like to thank all of you who helped me with the troubleshooting, the seller has installed wrong mpem i got the correct mpem and spark is good now

 

[EXTREMEFUN1300]

Wrong MPEM? Do you know why he installed a different MPEM in the first place?

 

[Ziii]

Wrong MPEM? Do you know why he installed a different MPEM in the first place?

I have no idea.