Mercruiser Engine Problem
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easy way to tell if coil... when they go bad ..usually it because theres a short it gets hot expands shorts out totally dies till it cools then starts back up. when it stalls touch coil if very hot theres you problem.. thats the back yard way the other way is to use a dvm ( digital volt meter) and check the ohms resistance.
Last edited by GOODT; 01-09-2006 at 06:49 PM.
#14
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That symptom (surging at high RPM) can be a caused by several things, but I don't think the IAC motor is one of them. A few suggestions:
Check battery and engine power and ground connections as suggested above.
Check Knock Sensor and Ignition Control circuits (wires) and make sure that they are not touching any spark plug wires.
Check for trouble codes.
Check fuel pressure under load.
Dave
Check battery and engine power and ground connections as suggested above.
Check Knock Sensor and Ignition Control circuits (wires) and make sure that they are not touching any spark plug wires.
Check for trouble codes.
Check fuel pressure under load.
Dave
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I agree with dave but surging isnt what he said, cutting out is granted its a fine line but with out running the boat have to go with what is said. and im not saying that thats what it is just saying check it. could be it along with fuel press coil ect. can sit here and give 200 reasons but have to go step by step till you find the culprit. thats why theres flow charts and short cuts but if not in front of you you can only say to check in order of elinination
and yes my spelling sucks
and yes my spelling sucks
#16
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Originally Posted by GOODT
sorry didnt mean to get pissy but just because something when working properly only effects idle doesnt mean that when its not working properly it doesnt effect other things ie the iac. been doing this a longggg time and ill be the first to admit that im not always right but ..........
anyone who says they are always right I wouldnt trust anyway !!!
anyone who says they are always right I wouldnt trust anyway !!!
Third, I'm trying to help you with my experience. If you think disrespecting me when I'm trying to help you is cool then go phuck yourself and everybody that looks like you.
Ed Cozzi
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ok here we go first its not my boat read the post....
second, I dont survey boats I fix them....
third..... i THINK first before I tell someone something....
fourth.... after 25 yrs I think ive proboly been doing this longer then you....
if I wanted to be mean and dis you I would of told you to eat s*it and die
I have certs from merc, omc and volvo and you...???????
oh and no im not a hot shot just 42 yrs old been doing hp boats for a long time and no im not always right just not wrong often and dont like being put down when im not wrong if i am then go for it.. if your not 100% sure when you say something then say I think the iac only controls idle. dont mke it sound like you know 100% that im wrong when im not!!!!!!!!
I take alot of pride in my work and try not to be wrong
I dont survey boats
you do
do you want me to say more
second, I dont survey boats I fix them....
third..... i THINK first before I tell someone something....
fourth.... after 25 yrs I think ive proboly been doing this longer then you....
if I wanted to be mean and dis you I would of told you to eat s*it and die
I have certs from merc, omc and volvo and you...???????
oh and no im not a hot shot just 42 yrs old been doing hp boats for a long time and no im not always right just not wrong often and dont like being put down when im not wrong if i am then go for it.. if your not 100% sure when you say something then say I think the iac only controls idle. dont mke it sound like you know 100% that im wrong when im not!!!!!!!!
I take alot of pride in my work and try not to be wrong
I dont survey boats
you do
do you want me to say more
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I just realized that "Mr. trying to be clever," GoodT, didn't start the thread.
Well, here's my take on your suggestion about the IAC with the symptoms mentioned: YOU MIGHT AS WELL HAVE SUGGESTED HE TEST THE WINDSHIELD WIPER SWITCH!
It's punks like you that keep a lot of guys from posting here. Sarcasm has yet to fix any boat I've ever worked on.
Well, here's my take on your suggestion about the IAC with the symptoms mentioned: YOU MIGHT AS WELL HAVE SUGGESTED HE TEST THE WINDSHIELD WIPER SWITCH!
It's punks like you that keep a lot of guys from posting here. Sarcasm has yet to fix any boat I've ever worked on.
#19
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Originally Posted by GOODT
ok here we go first its not my boat read the post....
second, I dont survey boats I fix them....
third..... i THINK first before I tell someone something....
fourth.... after 25 yrs I think ive proboly been doing this longer then you....
if I wanted to be mean and dis you I would of told you to eat s*it and die
I have certs from merc, omc and volvo and you...???????
oh and no im not a hot shot just 42 yrs old been doing hp boats for a long time and no im not always right just not wrong often and dont like being put down when im not wrong if i am then go for it.. if your not 100% sure when you say something then say I think the iac only controls idle. dont mke it sound like you know 100% that im wrong when im not!!!!!!!!
I take alot of pride in my work and try not to be wrong
I dont survey boats
you do
do you want me to say more
second, I dont survey boats I fix them....
third..... i THINK first before I tell someone something....
fourth.... after 25 yrs I think ive proboly been doing this longer then you....
if I wanted to be mean and dis you I would of told you to eat s*it and die
I have certs from merc, omc and volvo and you...???????
oh and no im not a hot shot just 42 yrs old been doing hp boats for a long time and no im not always right just not wrong often and dont like being put down when im not wrong if i am then go for it.. if your not 100% sure when you say something then say I think the iac only controls idle. dont mke it sound like you know 100% that im wrong when im not!!!!!!!!
I take alot of pride in my work and try not to be wrong
I dont survey boats
you do
do you want me to say more
You had a lot of nerve disrespecting me. I am WAY more than a surveyor and always have been. I was already over the wet-behind-the-ears mode when I was 42. Hopefully this might happen for you.
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Hello to all that took the time to answer me. I did do the fuel filter. I did check the fuel pressure but not under load just on the lift out of the water at idle. I did not change the coil yet. I will try and change the coil and then try to change fuel pump and see where that takes me. Please if you have any other suggestions please feel free in contacting me. THANKS AGAIN TO ALL.