Tune up question ?

[Calae 2000]

We have an '89 Chris Craft 19 ft with a 4.3 OMC. Question ? I have documentation that the motor was professionly tuned up with new plug wires, plugs, and points in 2010. Then the boat was run very little for the following 4 yrs. I bought the boat a yr and a half ago. Was hard to start when cold, so I put a new point set and condenser.,and new plugs, Ran good last yr. Oh has a 2 barrel Rochester Carb. Idles good and does not miss out under a load. Still fairly hard to start when cold though... Gaps all set properly... Would a new coil help any ? Thanks for your feedback, does start somewhat easier when it gets Summer like.... I just hate long starts and warm up times..

 

[wrench 3]

Did you check the ignition timing after replacing the points and do you pump the throttle twice before a cold start?

 

[Dmopar74]

Does your choke work

 

[bruceb58]

Set your points with a dwell meter?

 

[Calae 2000]

Thanks men, no didn't recheck the timing or use a dwell meter, the choke is working I think ? Will check it out.

 

[Scott Danforth]

if you did not use a dwell meter or recheck your timing after installing new points, you are most likely off with your timing.

 

[jerryjerry05]

Hard starting when cold?
The fuel could be leaking back down to the tank.
Check the anti-siphon valve in the tank.

You should have a mechanical choke.
Make sure it's set right.

 

[Silvertip]

Rochester 2bbl carbs are top-fill so fuel will not drain back and even if it does, the float bowl remains full. Set the dwell first, then the timing. (Why in that order is a physics problem that I'll let you ponder when you have nothing better to do.)

 

[Calae 2000]

Turns out the round choke thermostat on the side of the carb was broken. Got a new one at O'Reilly Auto parts for $13.00, put it on and set the choke approx. 1/8" open and it starts much better now when cold.