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#1
posted to rec.boats
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3.0 wont idle but runs great
Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It
will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- |
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#2
posted to rec.boats
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3.0 wont idle but runs great
On Jul 11, 6:02*am, "Steve" wrote:
Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- Did you try premium? Sounds like maybe it is vapor locking. |
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#3
posted to rec.boats
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3.0 wont idle but runs great
On Jul 11, 5:02*am, "Steve" wrote:
Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- You might want to run a compression test to see if you have a burnt valve. My 140 would sort of do the same thing, but would run WO and pull the proverbial "4000 RPM", and there was no sign of water in the oil, but when idling back down it would cough, and die. it took some throttle work to get it over the dead spot but would seem to run fine. however, pulling a tube was a chore. a real loss of power. but w/o the extra drag, you couldn't tell it.Under investigation it had a blown head gasket and two exhaust valves burnt. Had the head checked out, replaced with all steel valves and a new gasket Runs great and hasn't stalled since. |
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#5
posted to rec.boats
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3.0 wont idle but runs great
On Jul 11, 9:13*pm, I_am_Tosk wrote:
In article d9767c46-043d-4627-83df-cf4287ca83b7 @d14g2000yqb.googlegroups.com, says... On Jul 11, 5:02*am, "Steve" wrote: Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- You might want to run a compression test to see if you have a burnt valve. My 140 would sort of do the same thing, but would run WO and pull the proverbial "4000 RPM", and there was no sign of water in the oil, but when idling back down it would cough, and die. it took some throttle work to get it over the dead spot but would seem to run fine. however, pulling a tube was a chore. a real loss of power. but w/o the extra drag, you couldn't tell it.Under investigation it had a blown head gasket and two exhaust valves burnt. Had the head checked out, replaced with all steel valves and a new gasket Runs great and hasn't stalled since. Yup, that's what I am thinkin'... -- Team Rowdy Mouse, Banned from the Mall for life! Yeah, Scott. I think his problem is'nt fuel delivery, but much deeper than that. |
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#6
posted to rec.boats
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3.0 wont idle but runs great
my compression gauge only goes to 160. I pegged the gauge on each cylinder.
I started it last night, ran fine. It seems to do this only when it has below 1/2 tank. and after idleing for a while (over 10 minutes) SOOOO ???? Its in a Balyliner 175,year:2005. A couple of ideas that I want to throw out there . Is there a screen in the fuel pick up?, I already checked the gas tank vent, clear. Could the ignition module be funky, gets hot and retards the timing? I really dont want this one, can a bad flapper/shutter cause it, Thanks again. Sorry for the mindtwist Steve "Tim" wrote in message ... On Jul 11, 9:13 pm, I_am_Tosk wrote: In article d9767c46-043d-4627-83df-cf4287ca83b7 @d14g2000yqb.googlegroups.com, says... On Jul 11, 5:02 am, "Steve" wrote: Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- You might want to run a compression test to see if you have a burnt valve. My 140 would sort of do the same thing, but would run WO and pull the proverbial "4000 RPM", and there was no sign of water in the oil, but when idling back down it would cough, and die. it took some throttle work to get it over the dead spot but would seem to run fine. however, pulling a tube was a chore. a real loss of power. but w/o the extra drag, you couldn't tell it.Under investigation it had a blown head gasket and two exhaust valves burnt. Had the head checked out, replaced with all steel valves and a new gasket Runs great and hasn't stalled since. Yup, that's what I am thinkin'... -- Team Rowdy Mouse, Banned from the Mall for life! Yeah, Scott. I think his problem is'nt fuel delivery, but much deeper than that. --- Posted via news://freenews.netfront.net/ - Complaints to --- |
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#7
posted to rec.boats
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3.0 wont idle but runs great
On Jul 12, 4:29*am, "Steve" wrote:
my compression gauge only goes to 160. I pegged the gauge on each cylinder. |
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#8
posted to rec.boats
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3.0 wont idle but runs great
On Jul 12, 5:29*am, "Steve" wrote:
my compression gauge only goes to 160. I pegged the gauge on each cylinder. |
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#9
posted to rec.boats
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3.0 wont idle but runs great
In article ,
says... my compression gauge only goes to 160. I pegged the gauge on each cylinder. I started it last night, ran fine. It seems to do this only when it has below 1/2 tank. and after idleing for a while (over 10 minutes) SOOOO ???? Its in a Balyliner 175,year:2005. A couple of ideas that I want to throw out there . Is there a screen in the fuel pick up?, I already checked the gas tank vent, clear. Could the ignition module be funky, gets hot and retards the timing? I really dont want this one, can a bad flapper/shutter cause it, Thanks again. Sorry for the mindtwist Steve "Tim" wrote in message ... On Jul 11, 9:13 pm, I_am_Tosk wrote: In article d9767c46-043d-4627-83df-cf4287ca83b7 @d14g2000yqb.googlegroups.com, says... On Jul 11, 5:02 am, "Steve" wrote: Hey all, I have a 2005 3.0l mercruiser sterndrive that is acting wierd. It will run all day long, runs great, but at the end of the day, it refuses to idle, it just dies on me. Start it back up and it will run full throttle just fine, but try to idle and it dies. If I let it sit for a day or two, it goes back to running normal. So far I have rebuilt the carb, rebuilt the fuel pump, cleaned the fuel filter. checked for water in the gas, put another ingnition module in, replaced the coil. Im out of things to do. What am I missing? Thanks Steve --- Posted via news://freenews.netfront.net/ - Complaints to --- You might want to run a compression test to see if you have a burnt valve. My 140 would sort of do the same thing, but would run WO and pull the proverbial "4000 RPM", and there was no sign of water in the oil, but when idling back down it would cough, and die. it took some throttle work to get it over the dead spot but would seem to run fine. however, pulling a tube was a chore. a real loss of power. but w/o the extra drag, you couldn't tell it.Under investigation it had a blown head gasket and two exhaust valves burnt. Had the head checked out, replaced with all steel valves and a new gasket Runs great and hasn't stalled since. Yup, that's what I am thinkin'... -- Team Rowdy Mouse, Banned from the Mall for life! Yeah, Scott. I think his problem is'nt fuel delivery, but much deeper than that. --- Posted via news://freenews.netfront.net/ - Complaints to --- Well, a compression test is great if the symptoms are happening when it's cold and you do the test, but in the case of a smoked valve, it can happen only when it gets hot (for now)... I could be wrong but I think for the valves, you need to do a leak down test, and even then if the valve isn't hanging open cold, it won't show you much... -- Team Rowdy Mouse, Banned from the Mall for life! |
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#10
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ALL the jets are clear. I soaked the carb in carb cleaner an then sprayed
out all the jets with the carb cleaner in the can. I dont think its vapor lock, I can see gas squirt out the accel pump jets. |
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