200 Merc efi idle at norm temp

[tws9475]

I have a 1999 200 EFI it starts fine runs fine until it is ran at low speeds for trolling.loads up and stalls. ECU replaced, oil markings set right, new swtich boxes. Runs awesome acts up when at low speeds for ex. when putting trailer or having to go from reverse to forward timing is set and tps is set. stalls smells like gas and oil. smokes like crazy.

 

[WillyBWright]

Re: 200 Merc efi idle at norm temp

V-6s make crappy trollers. You can do this, that, and the other thing and it will still troll crappy. They need to breathe or the gas just puddles inside and it starts to load up and get real rich. This is not a new problem. Been around as long as they have. The only cure is RPMs.

 

[tws9475]

Re: 200 Merc efi idle at norm temp

That stinks even in a short period of time too? shouldn't the computer on the efi control it? when loading it on the trailer I can't even drive it on I have to winch it on because it will not even restart some times.<br />Thank for the input,<br />Tom

 

[Cookiemonster]

Re: 200 Merc efi idle at norm temp

My 2000 225 EFI idles and trowls fine. Sounds like you have a problem to me.<br /><br />Have you taken it in get the fault codes checked?

 

[BiteMe]

Re: 200 Merc efi idle at norm temp

I have same problem but only on starboard motor. Wide open no probs 53mph at 5800 on 27ft robalo. I have to use port motor to troll and havnt had it do this. If you find out what was the prob please post it and GOOD LUCK!

 

[BiteMe]

Re: 200 Merc efi idle at norm temp

I forgot to add I have same motors 99 200efi bluewater