Remove the oiler and pre-mix fuel as the very first thing to do when you get a jet ski. Oil injection failure is the #1 killer of jet skis in my opinion.
I’d delete the oil pump on them both and switch to premix. The oil pumps is the most common failure on these skis. Also if they have powervalves you need to put the waveeater clips on the powervalve.
Hey man Same issue What you did to get it running I have the same model I’m just able to get to the warning light and that’s it Mine has been sitting for 4 years Pls help I haven’t found much information about the gp1200r
I've been working on two-stroke jet skis for over 20 years and was just trying to throw a few things on these to get them on the water you are going to destroy the motor if not right at first you definitely will destroy it you have to go through these things with a fine-tooth comb and make sure everything is absolutely perfect if you do not so much as a loose gas cap seal will blow your engine up
@@floridafamily3796 You disconnect the fuel lines. Return and inlet. Get youself a spray bottle filled with a soapy water solution. Plug off the fuel inlet hose, the hose the fuel filter is on. I use a phillips screwdriver..you could use a bolt and clamp. Get an air compressor and turn the pressure WAAAY DOWN using the pressure control knob. DO NOT USE MORE THAN 3 PSI PRESSURE!!! Put the air hose onto the fuel return side and fill that side with air. You spray EVERY part of the fuel system down that has hoses or anyplace air can leak with the soapy water. Look for bubbles. Spray the closed fuel cap, spray all the lines, spray that rubber boot with all the hoses coming out of the fuel tank. Look for bubbles. That is how to test your fuel system for leaks. I did a video on how to repair the fuel sending unit orings and where to buy that large rubber seal if it is cracked. Theses engines can run lean and ruin a cylinder if that fuel system has air leaks.
