1987 xp200 engine tests at dock

After reading your secret files on checking fuel lines, and ignition testing, I would like to know if having the boat tied dockside would be okay in doing the higher RPM tests or WOT testing? I have a 1987 evinrude XP200 on a Procraft 19 ft..

Re: 1987 xp200 engine tests at dock

Hope you've got a strong dock! Personally, I'd go to a shop and have the motor tested there. Kinda pricey, but, I'd really worry about touching off a motor that size tied to a dock.

Re: 1987 xp200 engine tests at dock

Yes pricey is right. After 2 years and 4 trips to the shop and big bucks, they have not fixed my problem. The motor will hesitate and sometimes recover but evenualy die at various rpm's. This may be 5 minutes after starting or 20 minutes. The shop has replaced VRO pump, told me a hose was colasping under the VRO pump, crack in oil line, and lastly replaced the stator and timing base. Today I replaced the fuel line from tank, squeeze bulb, and replaced fuel filter with a transparent one. I hooked up clear tubing between filter and VRO with vacuum guage. getting 4 in hg vacuum. Getting a few bubbles every 5-6 seconds showing in tubing and the fuel filter looks empty. Squeezing bulb will refill filter but level drops again. Motor is not stopping though, so I don't know if filter fuel level is relevent. This was all done with water muffs. So I thought I would like to try if at higher throttle at the dock.

Re: 1987 xp200 engine tests at dock

Don't think I'd hook to dock and go WOT; something is going to let go. But if you're seeing bubbles in your lines then that's part, if not all, of your problem. Air is getting in somewhere and the more WOT you go the more air. Got to find the leak.

Re: 1987 xp200 engine tests at dock

Thanks, only tank connection and fuel pickup line is left. will update later.

Re: 1987 xp200 engine tests at dock

You can always back it in the water and run it on the trailer. Check first if this is allowed in your area (power loading is not allowed at a lot of ramps in our area). tied to the trailer works very well for testing.
Also, you better check about using the clear fuel line in your area. Federal law will only allow marine approved fuel lines.

? 183.558Hoses and connections.(a) Each hose used between the fuel pump and the carburetor must be ?USCG Type A1? hose.
(b) Each hose used?
(1) For a vent line or fill line must be:
(i) ?USCG Type A1? or ?USCG Type A2?; or
(ii) ?USCG Type B1? or ?USCG Type B2? if no more than five ounces of fuel is discharged in 21/2 minutes when:
(A) The hose is severed at the point where maximum drainage of fuel would occur,
(B) The boat is in its static floating position, and
(C) The fuel system is filled to the capacity market on the tank label under ? 183.514(b)(3).
(2) From the fuel tank to the fuel inlet connection on the engine must be:
(i) ?USCG Type A1?; or
(ii) ?USCG Type B1? if no more than five ounces of fuel is discharged in 21/2 minutes when:
(A) The hose is severed at the point where maximum drainage of fuel would occur,
(B) The boat is in its static floating position, and
(C) The fuel system is filled to the capacity marked on the tank label under ? 183.514(b)(3).
(c) Each hose must be secured by:
(1) A swaged sleeve;
(2) A sleeve and threaded insert; or
(3) A hose clamp.
(d) The inside diameter of a hose must not exceed the actual minor outside diameter of the connecting spud, pipe, or fitting by more than the distance shown in Table 8.
Code of Federal Regulations / Title 33 - Navigation and Navigable Waters / Vol. 2 / 2009-07-01930
Table 8 If minor outside diameter of the connecting spud, pipe, or fitting is? The inside diameter of the hose must not exceed the minor outside diameter of the connecting spud, pipe, or hose fitting by more than the following distance:
Less than 3/8 in 0.020 in.
3/8 in. to 1 in 0.035 in.
Greater than 1 in 0.065 in.
[CGD 74-209, 42 FR 5950, Jan. 31, 1977, as amended by CGD 85-098, 52 FR 19728, May 27, 1987]

Re: 1987 xp200 engine tests at dock

If you can find an old prop you can cut off the blade ends equally and make your own test prop. It just takes a little playing with to get the correct rpm with no thrust on the boat yet a load on the mtr. OMC did this for years in their test center and Merc used this on their mtrs in service schools in a test tank.

Re: 1987 xp200 engine tests at dock

Thanks for info. I will check hose ratings. Good info.

Re: 1987 xp200 engine tests at dock

While im no expert I had a similiar problem, replaced alot of the stuff you did, my problem was a couple of things, 1. Was when I replaced the carb after rebuild somehow I didnt tighten the carb bolts down enough where they meet the intake, 2. Wheni replaced the fuel pump the rubber gasket didnt seat well enough in the unit, using marine grease on the rubber gasket solved that, and finally I had a hose that came from the bottom of my carb set that attached to the air filter housing, I cant recall its name for some reason but it was only attached carb side and left to float, when I hooked it to its corresponding nipple on the "air filter housing" big difference, so what im getting at before u start cutting props or wot your boat while moored try looking over those things, because as someone already stated your getting air in the fuel line which is causing your problem and mine had multiple solutions, not just one clear cut fix... Good luck!

Re: 1987 xp200 engine tests at dock

Here where I live, if you leave the boat on trailer for purposes of engine problem/s, they call it test and tune. Boat don't even need to be registered in order to do so. Who would have ever thought!

Re: 1987 xp200 engine tests at dock

Monte
A lot of counties here have outlawed "Power Loading or Unloading" do to the horrible impact it has here on undermining the boat ramps. Mostly sand beds with the concrete ramps poured into them and the excessive wash from the props digs out the base of the ramps. I have heled a lot of people try and get their boats out after they back in a bit too far and the trailer drops off into a washed out pit and bottoms out, boat owner doesn't realize it and loads the boat only to fine out he or she can not pull it out.