2002 250 OX66 Shifts Hard

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

Can the O2 sensor be tested in the shop with the engine sitting in a water vat/tank?<br /><br />HH

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

if you can properly submerge the gearcase to its normal depth I dont see why not. have them use test wheel YB1626 and after the idle test with the air bypass hole throttle it up to about 3000 RPM. the reading should bounce between .3 and about .5V. DO NOT attempt a full power run with that test wheel. it will blow right through the wheels ability to keep the motor loaded.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

rodbolt,<br /> I took my boat to the local tech. today. Had some long conversation and they are very honest, reasonably priced guys. However, they are "parts changers". They work on alot of OX-66's but they did not even have a manual. So I need to decide what I should have them do and what I should have them keep their hands off of. At $55/hour labor, I think I should have them go ahead with the easy stuff. I don't think I should let them touch my O2 sensor. They head guy was not there but his mechanics were clueless about cleaning and testing the sensor. What I am thinking is to have them go ahead and do the following:<br /><br />water pump kit<br />lower unit grease<br />spark plugs<br />thermostat<br />low pressure fuel pumps<br />Link and Sync??? not sure<br />VST screen??? not sure<br />TPS Sensor??? not sure<br />Poppit Valve??? not sure<br />Micro Screen in Pressure Regulator??? not sure<br /><br />They are all I have. What are your thoughts? I told them to order me a manual for that engine. <br /><br />Alan

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

I would find a shop with trained and reliable techs. your dealing with a monkey shop.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

Easier said than done but yes. Anyway the head guy will be there in the morning and I'll talk to him again about some of the simple stuff. His name is Greg Clark and was the head mechanic for Asheville Marine (I think Rick Brigmans dealership) before they closed. He has alot of Yamaha training but I do not know how recent. Have you ever heard of him? He had alot of Yamaha training certificates on the wall but I did not see one that said "master tech" nor did I see one dated beyond the year 2000, about the time Asheville Marine closed. He started his own Yamaha repair shop after that and tells me he is qualified for warranty repair work through Yamaha, whatever that means.<br /><br />Alan

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

never heard of him. but it sounds like a fly by night outfit.<br /> at least ask him how and why the o2 sensor works.<br /> like i say, i dont think they know squat about efi.<br />try calling yamahas consumer help line and explaining your delima to them.<br /> the tech rep for our area is on the outer banks today and may be able to stop by your area later this week.<br /> but the cleaning and testing procedures are in the oi,o2,o3 o4 o5 and o6 tech guides. these manuals are shipped to dealers and handed out to everyone that attends the 1 day yearly update seminars. sounds like your techs either dont bother reading them or dont attend the technical update seminars.<br />i work with a guy that wont crack a book, he has been doing it for 20 years, but he makes the same mistakes time after time.<br />me? I have enough trouble remembering where the book is much less whats in it so I usually grab it and read through it before starting about anything.<br />the information you need is also in the technical bullitens, have them look for it and look for the draw tube bulliten to see if it applies to your motor. it was for the 3.1L motors about your year range.<br /> the propane tourch test is usless and not accurate at all. I have had them pass the bench "flame" test and not work on the motor.<br /> so we are right back to it must be tested to confirm its working.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

So, you think I should go pick my boat up and not even have them do the minor stuff?<br /><br />Alan

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

Can anyone recomend a good EFI guy in Greenville/Spartanburg/Hendersonville? Thats within an hour of me.<br /><br />HH

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

dont know anyone up that way personally but call the yamaha consumer line and ask them.<br /> these motors are not terribly complex. in fact the EFI technology they use is 20 years old or so. however they are rather touchy and dont tolerate subsystem degradation like cars will.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

This is the guy<br /><br />http://www.yamaha-motor.com/outboard/dealers/locator_display.aspx?&LOC=35.711223%3a-82.591931&CT=35.711223%3a-82.591931%3a1.1%3a1.1&IC=35.711223%3a-82.591931%3ayflag2%3aGREG+CLARK' S+COUNTRYSIDE+MARINE&DNO=BEICBAAAB&GAD1=GREG+CLARK'S+COUNTRYSIDE+MARINE&GAD2=956+NEW+STOCK+RD&GAD3=WEAVERVILLE%2c+NC+28787-8300&GCITY=WEAVERVILLE&GSTATE=NC&GZIP=28787-8300&GAD4=USA &Phone=828-658-3055&DSN=MapPoint.NA&rc7=N&rc8=N&rc9=N&rc10=N&rc11=N&rc12=N&rc13=N&rc14=N&rc15=N&rc16=N&rc17=N&rc18=N&rc19=Y&rc20=Y&fiveStar=N&IC_O=35.5384851195735%3a-82.5119431739 881%3a32%3a28803&IC_D=35.711223%3a-82.591931%3ayflag2%3aGREG+CLARK'S+COUNTRYSIDE+MARINE&GAD2_O=&GAD3_O=28803&GCITY_O=&GSTATE_O=&GZIP_O=&GAD4_O=&GAD1_D=GREG+CLARK'S+COUNTRYSIDE+MARI NE&GAD2_D=956+NEW+STOCK+RD&GAD3_D=WEAVERVILLE%2c+NC+28787-8300&GCITY_D=WEAVERVILLE&GSTATE_D=NC&GZIP_D=28787-8300&GAD4_D=USA&ls=outboard

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

still does not mean anything to me. while your ordering manuals get an 03 or 04 marine tecnical manual.<br /> the info you seek is on paper regaudless if your techs wish to read it or not.<br /> 5 star certified means they passed an open book video course. oneday I will be 5 star. especially since I cant take the master couse in march until I am 5 star. guess ill do it one day soon.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

Whats the world coming to? I talked to five Yamaha Service Manager within 1 hour of me today. None of them test the voltage on the O2 sensor after cleaning. One said he checked resistance. None of them were even slightly familiar with the wet test voltage check procedure.<br /><br />HH

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

the only resistance spec is for the heater element in the sensor, the heater is to aid in cold starts and after that has not much to do with the sensor output.<br /> shows who paid attention in the fuel system school and who just passed the test.<br /> like I said 5 star is an open book video course. to me its a teat on a boar hog but I have to do it before taking the masters course in march.<br /> its amazing how little some of the techs and reps actually know about how the systems actually work.

 

[HeadHunt]

Re: 2002 250 OX66 Shifts Hard

For some closure to this thread. I went back out and spent 30 minutes talking to the head mechanic at this shop last Wednesday. He answered all my questions and seemed to be more knowledgeable than the other 5 big shops I called. The guy has been working on Yamis for 19 years and is Top Gun certified, whatever that is. Anyway, he seemed to know his stuff. I let him proceed with the service. I picked the boat up this morning and he spent alot of time with me going over everything he did:<br /><br />Water Pump Kit<br />Replaced both thermostats(old ones were coroded)<br />Replaced fuel filter<br />Replaced spark plugs<br />Replaced lower unit grease<br />Complete sync and link<br />Cleaned VST screen<br />Checked TPS<br />Checked pressure on fuel rail<br />Adjusted oil rod<br /><br />And the big one...cleaned the O2 sensor and sniffer tube. The tube was bad. It had a good bit of carbon on it. He saved the gunk to show me. Previous owner did not run ring free. The O2 sensor was not extremely dirty but he did clean it up. No wet test voltage. I will not be able to run it until next Saturday. this guy did have the service manual. He said he checked for error codes also. I was not aware of this engine having that capability. <br /><br />Thanks for all the help rodbolt. I think now it is time for me to buy the harness and VOM so I can keep a check on the sensor. Any coments on this analysis?<br /><br />$442 total<br /><br />HH

 

[rodbolt]

Re: 2002 250 OX66 Shifts Hard

not really. the wet test is imerative as some sensor die in the cleaning process. the ECU will store various codes and can be seen with the diagnostic lamp.<br /> did he miss the pressure control valve inspection/grommet replacing?<br /> how about the remote oiul tank filter? how about the engine oil tank water trap cleaning. next time ya go in look at any of the marine technical guides, not service manual. it has the latest and most uptodate info on 10,50,100 and 200 hour services and the calander equivalent. <br /> did ya check the battery water level?<br /> you really really need to get a copy of that service schedule and take note that is hours OR calander whichever occur first.<br /> so far there is no top gun. the first master tech course is scheduled in march in kennesaw Ga. Ill be there . I have done all the other courses, some twice. then ill charge the big bux baby .