MERCURY 350 MAG MPI IAC VALVE REPLACEMENT (2 BEEPS & STALLING SOLVED & FIXED)
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- čas přidán 28. 08. 2024
- My Donzi 28ZX is equipped with twin mercury 350 mag mpi engines. The boat routinely has it services done and the engine were just previously rebuilt last season (2021) The engines have around 340hrs on them. All the gauges work as they should and no problems occurred.
The other day I took my boat out on a quick run and this beep came on. It beeped twice every minute or two and would not stop. I noticed that the starboard engine was stalling when in neutral or at a very low RPM. I did some hunting and came to the conclusion that it was the IAC valve (Idle Air Control Valve)
I went to my local marine store and they had the part in stock. I replaced the IAC valve and the engine beeping along with the stalling went away. The problem was fixed.
Hope this helps. If you have any questions, leave a comment. Thanks
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Update * it’s been over a year since I changed the IAC valve. The boat has been running great and there have been no issues whatsoever. Thank you for the thumbs up. Please follow my page and leave a comment if you have any questions. Thank you
I loved the video. My favorite part was the BEEP BEEP part. No, but for real. Those 350's sound good in the Donzi. I have them in my 280 Formula. It sounds like you have the through hull on it. Like the rumble!
Excellent video n my wife will be happy we will not stall anymore coming into our dock. Thank you .
awesome tip,i have same engine and it's good to know about this,,thanks for sharing this buddy 👍🏻👊
Don’t forget get to change out your IAC filter in the Carburetor. $2.50 for two from Mercury dealer. It’s a thumb nail size white filter. Long nose pliers to remove and install.
Thanks for posting this video…searched for 2 years
Sure no problem
Well done!!! Thanks for the run down on this. Take care!!
thanks brother for posting such a clear and concise video on this.. appreciate your efforts.
had the beeping on my 350 mag yesterday, now i know what to look for.
Awesome thank you. And you’re very welcome. I’m glad that the video helped and good luck!
Appreciate it. I believe we have the same boat. I've got a 2005. I put a closed cooling system on mine.
That’s awesome. I love this boat. I’m actually thinking about selling it. What is the closed cooling system and how does it work?
Replace crank shaft sencer and turn distributor just a little to advance and check spark plugs and clean distributor cap inside at the points and rotor and happy boating
sweet. thank you for the info
Nice job 👍
Great video thank you! Had the beeping start last weekend. Also noticed I had to throttle up a little on that engine to get it to start so I’ll replace this valve and see if that does the trick. Quite a price difference between the IAC from Wesr Marine ($148) and Amazon ($27). Where did you get yours?
Thank you. Sorry for the late reply. I’m glad that the video helped. I got mine at a local Marine supplier. They had the part at the store. I don’t remember what I paid
You’re a mechanic that redid the engines was he a backyard Mechanic or was he a certified shop?
certified shop and marina
Where did you get your part from? And are you able to share the part number?
I got the part at my local marine supplier. The place is called Fred Chall marine supply. It’s in Freeport, Long Island. I don’t have the part number offhand, but if you call them, they’ll be able to tell you over the phone.
Does your engine hunt back and forth on a cold start for the first 10 seconds or so before smoothing out? Wonder if my iac is getting lazy
It did a little bit. Now it’s good. Make sure your batteries are good and charged as well.
@amendolarestudios5276 well I mean mine has always done it really since it was brand new
I was told it was normal and it just takes it a few seconds to figure out what the air temp is and such and it runs off the map values of the last time it was ran.
Did you have to clear any codes after replacing the IAC valve, and if so how did you do that?
To be honest, I didn’t check for any codes. Everything seems to be great and working as it should it now
Do you remember where you bought the part? Can’t seem to find it
I bought it at my local marine store. The place is called Fred Chall Marine Supply on Long Island (Freeport)