1997 SX200TXRW 200HP Low RPMs in Foward

[whalerconquest]

I have a 1997 SX200TXRW 200HP with 3 carbs. Usually, I top out at about 5k rpm with a Mirage 15.5 x 17. Yesterday rpms would only go to 2500 in forward and slowly grow to about 4K. In reverse, rpms go to 5K, fast, no problem. No missing, no other problems. Reverse is perfect. Cable and linkage perfect. Gas is good. Could this be a fuel pump or pumps issue? Low pressure?

[rodbolt17]

cant be
the SX indicates OX66 efi.
wasn't made in 1998.
carefully look at the model number tag again.
the s200 was a carbed 2.6L v6.

[whalerconquest]

rodbolt17 - you're right . . . the motor is carbed as you pointed out . . . my error. any thoughts about the cause of low rpms?

[99yam40]

Still no correct model #?

[jb123]

unbolt lift pumps and pump ball , checking for leaks
... then clean /rebuild carbs

[whalerconquest]

thanks all will obtain exact number off engine and provide same 2marrow.

[whalerconquest]

the correct model number for the complained of motor in the thread is:

S200TXRW (6G6 X 504869 V / 1997 2596cc/2.6L)

thanks for any and all guidance . . . .

[99yam40]

W is a 1998 model but made in 97, so you just added an extra X behind the S.

Never hurts to check compression, spark, timing, and fuel pressure and vacuum on pumps and leak test like they stated to be sure, also need to make sure it is not sucking air along with fuel do to a bad connection.

Running under load takes more fuel, and reverse does not load the motor like forward does, so sounds like you have a fuel supply or a carb problem

[whalerconquest]

99yam40 thanks for the advice . . . i did not think about the loading or lack of same in reverse. i will order and replace both pumps. cheap enough for starters. again, thanks.

[rodbolt17]

test compression, test spark.
if both test ok replace the fuel pumps and clean the carbs.

[whalerconquest]

test compression, test spark.
if both test ok replace the fuel pumps and clean the carbs.

rodbolt17 and all thanks for the collective guidance. new fuel pumps on order. spark is good, carbs appear very clean.

[Luckydog210]

clean fuel tank intake

I had a clogged intake screen in my fuel tank with similar issues. Clean intake screen and ball check valve.

[whalerconquest]

I had a clogged intake screen in my fuel tank with similar issues. Clean intake screen and ball check valve.

thanks luckydog210; installed two new fuel pumps. upper fuel pump completely dry when pulled for repair (no gas in same at all). the lower fuel pump when pulled was full of fuel. looked like the upper fuel pump failed. will test my repair within a day or so and recap the symptoms and repair if effective . . . thanks all.

[99yam40]

A fuel pressure/vacuum test of before and after replacing should have shown the problem and if it was fixed.
Replacing parts and hoping just rubs me the wrong way