99 GSX RFI not startingstart up

[chipgsx]

99 GSX RFI not starting

hello, I have a 99' gsx rfi it does not want to start. When I have it on the trailer out of water it will start fine, no problems at all. When I get it in the water it does not want to start. It will crank over fine, seems like it is not getting enough fuel?? injectors??(not to sure) Finally after cranking it for awhile and pumping the gas it will finally fire up. After it is ran for a bit and warmed up it sems to start with no problems, just the initial start up is hard. It seems if I lift the back end up out of the water it will start up quicker at first. Just wondering if anybody has any ideas?? or anyone who has had similar problems..
Thank you..

 

[Bills86e]

Bad fuel pump, fuel regulator or filter clogged. Injector pintols need cleaned, and
When were the Raves last cleaned?

 

[chipgsx]

thanks for the help... What would you say the best way to try to clean the injectors?? An injector cleaner, seafoam??? Or is there a better way?? Also is there a valve on them to check fuel pressure??
thanks again

 

[chipgsx]

Any other ideas what could be causing this?? Im stumped!!

 

[chipgsx]

The pressure regulator on the water box (rave valve) also has a bit of a leak would this maybee be adding to my problem??

 

[chipgsx]

compression was 150 each cyclinder...