fuel pressure on 200efi

[20vector]

Re: fuel pressure on 200efi

first and foremost faztbullet hope all goes well with your medical issues and pray for a speedy recovery for ya.

ok heres what i did today. i made sure there was no blockage on MAP sensor fitting by blowing in it and was no blockage seem to flow good. after i did that reconnected it and ran motor till got warm. after warm shut off and disconnected hose again and left it open. started motor back up and ran for a minute (sounded normal) then put a vacuum pump on it. at like 15 inch pounds motor started running real bad. at about 25 inch pounds seem to clear up. so about 10 times i released pressure and then pumped back up to 15 inch pounds to make it act up and did everytime. reconnected map hose to fitting and let run few more minutes. with this being done does this mean MAP sensor good or should i still have it checked out still? thanks in advance ted. faztbullet i hope all is well.

 

[SparkieBoat]

Re: fuel pressure on 200efi

This is why I been off board for a few weeks,had intestinal surgery and bllod sugar problems but getting better....

Glad to hear you are doing better. our prayers for a full and swift recovery.

 

[20vector]

Re: fuel pressure on 200efi

hello all. so took boat on a run today wanted to run it and see how it would do after i disconnected idle stabilizer and messed with MAP sensor( did those test with vacuum pump and blew out fitting going in induction manifold). so pretty much the same thing acting up on take off. today when it did it luckly it cleared up with in minutes and was able to hook up. ok heres what i have questions on, my tachometer has been going in and out working one minute then not. so it the the same today but what i noticed today was my volt gauge when running was on close to 18 volts. so got my volt meter and the gauge was right. my meter showed like 17.5 volts at about 2500 rpm. wondering was this a problem. another thing i wondering about was after i ran it for about 5 minutes at about 5000 rpm i idled down to neutral and was turning around to run back to dock and i noticed it was smoking alot sitting there idleing. water temp still i think about 62 around here in mississippi. i just never noticed it smoking like that. just to throw it in there with me being a semi mechanic on cars when boat acting up sometimes i could swear it has to do with something fuel of course im not a boat mechanic but wanted to put it out there. most times when acting up it stays at the same rpm steady like if u wanted it there. but sometimes like today when acting up and stuck at 2300rpm it starts getting short burst to take off and sometimes does... crazy and again men thanks in advance for your help ted

 

[SparkieBoat]

Re: fuel pressure on 200efi

I can tell you that those EFI/DI motors are a real pain in the butt, there is a huge learning curve when stepping up from carb motors. I just spent 3 months figuring out what was wrong with my EFI motor. And I am normally a quick study. I can tell you that they are very touchy. 18 volts would indicate a bad regulator, which may be freaking your ECU out.

 

[20vector]

Re: fuel pressure on 200efi

o i hear ya on these efi motors. this is my first efi motor out of about 10 other motors i've had. crazy cause had johnson 200 on boat and came across good deal on this mariner 200efi and buddy said oh these efi motor will run alot better, be better on gas mileage and all around better motor. didnt take long to realize it got alot worse gas mileage and that was the main reason i decided to get it. and now 5 years later been having this bogging issue that i just cant track down. been doing it for 3 years now. lot easier to track down when theres no ECU. but yeah im gonna replace regulators and go from there and see how it does. was pretty sure it wasnt suppose to be charging 18 volts. i need to check water in battery cause probably was cooking batterys.thanks for the input. o yeah about it smoking bad do you think its because water still cold and motor is warmer then water.thanks again everybody.

 

[Faztbullet]

Re: fuel pressure on 200efi

Disconnect and test rectifier/reg as overcharging will overheat ECU and fuel pump. It will also cause stator to overheat and shutdown. Please dont not add airpressure to MAP sensor as it a vaccum tranducer...

 

[SparkieBoat]

Re: fuel pressure on 200efi

new ECU, $1100, new regulator, $500, new high pressure fuel pump, $800, new stator, $600...Labor, $1500 ..I just guessed at the prices but I bet they are close. Carbbed motor you can fix yourself for lower cost = priceless
you will never pay for the cost of a EFI/DI motor in fuel savings unless gas goes to $25 a gallon. The EFI motors are not really any better MPG unless its a 4-stroke. overall very minimal gas savings VS carbs. not a good reason to upgrade.

 

[CharlieB]

Re: fuel pressure on 200efi

How OLD is your battery?

An aging, yet fully functional battery on a carbed motor will allow charging voltage to get higher as the battery ages, until it gets to be a problem with on-board electronics, i.e., fish finders, GPS,etc.

On an EFI, this can be a problem.

 

[20vector]

Re: fuel pressure on 200efi

yea got 2 new batterys i replaced mid last season. last night i tested both rectifier regulators doing continuity test and on both doing the combinations of different wires book said i never got any continuity on any of the wires. i was expecting to get low readings or at least some reading but didnt get anything. had to read book again to make sure i was doing it right and reading few blogs on here and seems i was doing it right. im hoping that this may be causing my issues. thanks again guys ted

 

[20vector]

Re: fuel pressure on 200efi

hello all. was wondering since my motor was putting out those high volts and dont know how long it was actually doing this could it of done any permanent damage. or since its still running that probably didnt do permanent damage. i was just wondering. anything i need to check after a motor been putting out to many volts? i got the regulators on the way. thanks to all ted

 

[CharlieB]

Re: fuel pressure on 200efi

Rectifiers are one-way electrical valves, dsconnected from the stator and battery you should have continuity from each yellow connection to the red connection when tested with an Ohms meter only one-direction, when you reverse your meter leads there should be NO continuity.

If both rectifiers fail and have NO continuity either direction the system cannot charge.

You may have your meter set to the wrong scale.

 

[1nebel0]

Re: fuel pressure on 200efi

Hey Sparkie...you got my vote... I just rebuilt if you want to call it that, my 200h.p carb motor..$15.00 per carb for gaskets and good to go for another couple of years..Rebuilt the fuel pump, $15.00 more...I have EFI motors and the cleaning alone every year from Brucato is more than that! Then when you have problems the costs sky rocket...

 

[20vector]

Re: fuel pressure on 200efi

ok guys heres the latest. i got the 2 new rectifiers and installed them and took for quick run. for 30 minutes i went from neutral to full throttle like 12 times and no bogging ran good. 3 days later after work went for another quick run. everytime i full throttled it, it hooked up and ran good. but was running at about 4800rpm for about 7minutes and then started surging 3 or 4 times then dropped off and rpm's went to about 3500rpm to 4000rpms for 10 to 15 seconds then took off again and climbed back to 5000rpm.did this 2 different times this trip. so went out today and again no bogging on take offs just feel it surging. while on the way to islands a 25minute trip i felt it surge like 8 to 10 times. most of the times rpms dropped a bit and instanly picked back up. few times when rpms fell it took about 10 seconds then took off.on way home ran fine until 5minutes to dock then started doing the surging. ok heres my wondering part. ok now this to me feels like fuel. my question is why it didnt do this before?when it was boggin on take off and finally took off ran tottaly fine no issues after it finally took off.been doing that bogging stuff on and off for 3 years and those 3 years always once it was hooked up never had any issues.and that also was the case for the 5 trips i already took this year.tomorrow im gonna check hoses and primer bulb and stuff like that if any body can think of something i need to check please let me know.. thanks again always ted

 

[SparkieBoat]

Re: fuel pressure on 200efi

sounds fuel related..what was your fuel pressure during rpm drops??

 

[20vector]

Re: fuel pressure on 200efi

didnt have my fuel pressure gauge on it when this was happening, should of tho. i just rebuilt my mechanical fuel pump and replaced few fuel lines and ready to test run it. just gotta wait for this weather to get better. im on mississippi coast and see where your located and think your getting same bad weather. will keep y'all posted when i finally get to run it.

 

[veritek_dragger]

Re: fuel pressure on 200efi

have u fixed it? I have the same problem, same motor. driving me nuts!

 

[20vector]

Re: fuel pressure on 200efi

veritek_dragger, sorry been busy havent been on for while. believe ive fixed my motor. but done so much to it all at once so dont know exactly what fixed it. i removed oil injection system, removed idle stabilizer , removed detonation module and cleaned injectors. Did all at once and when was done she was running real good. And of course she still dont like to be pushed when shes cold but nothing 5 minutes of idling at dock wont fix. But everything i did i checked them few times after this started happening and all checked out good except the injectors didnt mess with them until the end when i took them out to clean. Checked all electronic stuff out about 5 times with specs. from mercury manual and always checked out good. so dont know what exactly was happening when it was messing up. also i replaced both Rectifier/Regulators. let me know how it goes with your and if you did something different. thanks

 

[CharlieB]

Re: fuel pressure on 200efi

removed idle stabilizer

Surprised that Fazt didn't tell you to do this in the very beginning, these have caused a LOT of problems to a lot of engines.