Hey Doug Huffman, I am not a boat mechanic but on an automobile that would problably be the electric cooling fan. Sitting at an idle there is no air going across the radiator and when it get going the air is automatically pushed through. If a boat even has a radiator and a fan ? just an idea if it does !

Hey Jimmy..That is true if it were a car.. No radiator though or fan

First of all, check the compression. I need to know this before going further.
Let me know
Capjun

I'm guessing it's an inboard/outboard, or stern drive. Have had the water pump impeller replaced ? I think the manufacture recomends every 2 years. Does the motor idle ok ? Not to slow ?
Let me know what you find.
Capjun

Capjun,
Thanks for the reply! I have changed the impeller. And it is an Inboard/outboard.and "Yes" It idles just fine runs perfect just seems to be getting hot when at idle...thx DH

If it were a compression problem wouldnt it do it all the time ? I can check it but I am just curious why. Its a intermittent problem. Compression doesnt come and go.

I will check it tonight and let you know.

What would charge to replace the cables on a 1999 nitro 882?

Hello capjun
I have a 1994 Mariner 175 that my tech tells me has been re-built twice in the last 2 years. He also has told me that he cannot identify anything on the carbs that tell him what kind of motor they come from. Evidentially the it is a slap together motor that he says sometime people do thinking they will get better performance.

My question is this, my tech tells me he would never be able to rebuild the carbs or do any kind of maint on this motor because it is not a standard set-up. What am I to do? Should I just give up in your opinion and look into buying a new motor (which may not happen soon because of the financial issue) or should I look for someone else who might have knowledge in building these one-offs kind of motors and have them look at doing a tune up and carb rebuild for me?

Please don't get me wrong, my tech is AWESOME and I trust him completely, I am kind of looking for a second opinion or someone who may have experience in this kind of situation.

Thanks in advance for your help.

Hey jummy, Take a bread tie, stripe plastic off. Use this wire, If there is a hole, make sure this will go through it, That's what I use. Look at back of the carb, open the throttle plate. You will see at least one hole,(sometimes two, or three), these are the idle, and off idle circut progession hole. these must be clean for accleration to happen. Also, Soaking the carbs in carb cleaner, and blowing them out are the best way to get them clean.
Hope this helps !

Hey Doug,
I would check the wear plate to see if it has grooves in it,or if it's bent any. The wear plate is what the impeller rides on.
Also, another check is to use a clear hose on the exhaust manifolds to see if there is any air bubbles in the water system. this would indicate a leak somewhere within the water the water system

Hey Tom, The labor is 2 1/2 to 31/2 hrs @ $70.00 per hr. And the price of the cables depend on the style. Look under the dash, and see if it has rack style, or rotor style. Also,check tothe helm see the manufacture of the helm. E-mail me for my phone number.
Thanks, Capjun

Hey everyone,
If you have question for me, please respond to the topic item " Marine tech, here to help ", or address it to me. I can't tell if all questions are directed to me. Thanks
And I hope i'm helping a little !

when you say use a clear hose on the exhaust manifoil are you saying to hook the hose to the petcock? also the wear pleat if it has grooves why would it run hot?

I ment to spell MANIFOLD.........

Hey Doug,
There should be a 3/4", or 1" hose coming off the front of the maniflod, going to the thermostat housing.
Grooves in the wear plate decrese the pump pressure.