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Florida Jim Florida Jim is offline
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First recorded activity by BoatBanter: May 2011
Posts: 358
Default 3.0 wont idle but runs great

On 7/13/2011 10:17 PM, Steve wrote:
Well its not a pinhole in the pickup tube. Have started or seen the boat
since sunday. Started right up. So i be thinking...
What about the internals of the distributor, can a pick up coil go bad?
Can I use a igntion module from a car to test it again? Does anyone test
ignition modules?
Thanks
Steve
"Florida wrote in message
b.com...
On 7/13/2011 1:04 PM, John H wrote:
On Wed, 13 Jul 2011 11:07:38 -0500, Boating All
wrote:

In ,
says...
OK let me start over, It is the Chevy 3.0 litre engine.(4 stroke) alpha
gen
II outdrive. a 2005 to be exact.
Symptoms: Will run great all day, when it gets to a half tank or at
the end
of the day, it will start and run fine, but when it idles for longer
than 10
minutes, it will die. Then after it dies, it is VERY hard to start and
will
only stay running at over 2k rpm. go back to it in a day or so, it runs
fine
Runs great all day. So it's not a heat/electrics problem.
Half tank it gives problems.
That means a bad fuel pump or bad tank venting.
Check fuel pressure at full tank and at half tank.
Simple.
Bad tank venting. I hadn't seen that yet, but it sounds like it could be
the problem. Create a
vacuum and you've got a problem.

Good 'eyes'.

Another guess. Pin holes in pickup tube in gas tank.



--- Posted via
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The trigger module in the dist. isn't that expensive but you may have to
replace the trigger wheel too, since it may get damaged upon removal to
get at the module. One more thing. Have you checked the coil high
tension lead? If it's resistor wire it should read 1 or 2 K ohms
otherwise 0 ohms.