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Hard to start

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Vincy

New member
I have a 2000 model 125hp mercury engine thats is very hard to start; does anyone have any idea where to start looking for a fix to this problem. i have taken it to a mechanic and he says that they have had a problem with them on starting but he did not seem to help with the problem.
 
..."they have had a problem with them on starting..."

Translation: "I'm too dumb to know what to do to fix it."

Assuming this is a carbureted Merc, here's what to try:

Your motor has an enrichener valve that dumps raw gas into the motor to start it when cold. It's either not opening, or you're not pumping the bulb enough (or it could be defective) for fuel pressure to build up. No pressure, no gas getting into the motor. Poor cold starting.

Try this: Pump the bulb up HARD, then see if that helps. If not, see if your enrichener has a manual 'valve' deal on it (usually red in color). Flip that (which does what the solenoid inside is supposed to do) and try starting her again. If that does it, see if the solenoid is getting juice and, if so, replace the valve.

Then find yourself another mechanic!

Jeff
 
Check this first.

Run your engine until hot, Turn off the engine. Let it sit for 10 minutes then open the remote oil tank fill cap and listen, (not the one on the engine). Is it still pressurized?
 
What is your cold starting procedure? How does it start when it is warm? No remote oil tank on the 125 hp motor they only have the tank under the hood. I am assuming this is a 2+2 4 cylinder motor and they can be a little hard to start. Since it only starts on the top 2 cylinders they are a little cold blooded.
 
Last edited:
flyingscott said:
What is your cold starting procedure? How does it start when it is warm? No remote oil tank on the 125 hp motor they only have the tank under the hood. I am assuming this is a 2+2 4 cylinder motor and they can be a little hard to start. Since it only starts on the top 2 cylinders they are a little cold blooded.
Click to expand...
My mistake, Though I read 150HP...Age....
 
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