1999 Mercury 200HP Optimax

[bobchapsr]

Cannot get above 2800 RPM. Replaced spark plugs, throttle position sensor, and fuel injector. Starts and runs great until going to full throttle - gets 2800 RPM and lugs - no more. Thanks for any ideas or help.

 

[sledhead041]

Re: 1999 Mercury 200HP Optimax

Hey buddy can you provide anymore information like the serial number, what injector did you replaced, what was wrong with the old tps assy. Are you getting any horn signals? Do you have the multi gauge installed on the dash and if you do is there any lights when you try to accelerate? What spark plugs did you have in it and what did you replace them with?

 

[bobchapsr]

Re: 1999 Mercury 200HP Optimax

Ser. # OG883117, model #1-200483UD, don't know which fuel injector just a part of bill, don't know what was wrong with the TPS, horn signal inop. but check engine lights are on both gauges and remain on after starting, replaced factory recommended NGK PZFR5F-11 with same. Thanks for your response Nick. Any help will be very much appreciated, Bob.