New to me Challenger problems

[Lbelmares2]

I purchased a 1998 Challenger 1800 on Friday. Went to the lake Saturday and right side engine was slow to start. Got it running and boat ran great, over 50 MPH. The right engine died while on water and would not restart. I did get it to start and run for about 30 seconds but it kept choking out and died.

Got it loaded and lots of water drained out. I have several questions. Where is the bulge pump and what switch operates it?

Where do I start on trying to fix the issue with right engine? Left engine fires up every time. I changed plugs, didn’t help.

 

[snikwad003]

The bilge pump is at the rear of the engine compartment near the center, not sure what switch on the 99.

 

[Sandman251]

A little more detail about the maintenance history of the boat might be useful. Did it sit for 6 years before you got it?
Everybody has their own opinion, but if it was me, I'd be checking the compression on that starboard engine... pronto. The procedure is documented in great detail on this site. Use the search feature and check out YouTube. Report back when you know the compression. While you're at it, do the port engine too.
If the compression values are good and you're getting spark, you will likely need to look at the carburetors. Again, the procedure for removing, inspecting, cleaning, or rebuilding these carbs is available on this site. Most important, don't panic! The 787 is generally a good motor that is not that difficult to work on.

 

[Lbelmares2]

A little more detail about the maintenance history of the boat might be useful. Did it sit for 6 years before you got it?
Everybody has their own opinion, but if it was me, I'd be checking the compression on that starboard engine... pronto. The procedure is documented in great detail on this site. Use the search feature and check out YouTube. Report back when you know the compression. While you're at it, do the port engine too.
If the compression values are good and you're getting spark, you will likely need to look at the carburetors. Again, the procedure for removing, inspecting, cleaning, or rebuilding these carbs is available on this site. Most important, don't panic! The 787 is generally a good motor that is not that difficult to work on.

I was able to find someone locally who is very experienced working on jetskis. He checked the black box (that functions somewhat like a distributor) and it was full of water because there was no seal. He believes that is probably the problem because I wouldn’t get spark because those pets are to be kept dry. He is going to check the boat over and try to have me ready to go this weekend. He is going to check compression and put the boat on a hose to make sure the engines are running properly.

I’ve known the guy for 20 years, just never knew he worked on jetskis or jetboats.

 

[Lbelmares2]

A little more detail about the maintenance history of the boat might be useful. Did it sit for 6 years before you got it?
Everybody has their own opinion, but if it was me, I'd be checking the compression on that starboard engine... pronto. The procedure is documented in great detail on this site. Use the search feature and check out YouTube. Report back when you know the compression. While you're at it, do the port engine too.
If the compression values are good and you're getting spark, you will likely need to look at the carburetors. Again, the procedure for removing, inspecting, cleaning, or rebuilding these carbs is available on this site. Most important, don't panic! The 787 is generally a good motor that is not that difficult to work on.

I was told the bot was well maintained and I bought it from the second owner. Also, that both engines were rebuilt in 2015. The previous owner was very adamant on only using certain oil, marking the oil resubmit periodically to make sure oil was being used.