Where should I spray seafoam on an MPI engine??

[Don S]

Re: Where should I spray seafoam on an MPI engine??

To my point... I just read on a reply by Don S to another threat that the oil pressure switch cable must be connected in order for the fuel pump to operate correctly??

That information is for a CARBED engine, you have MPI, Huge difference in how things work.
That's where a lot of people get into trouble. Reading things that isn't related to their engine, and trying to make it work. That switch feeds the alarm, you will have to check the manual to see if it's also used for the ECM, but I doubt it does if it ran ok with it unhooked.

Next. RESIZE your image. WAY too big.

 

[JP_R]

Re: Where should I spray seafoam on an MPI engine??

That information is for a CARBED engine, you have MPI, Huge difference in how things work.
That's where a lot of people get into trouble. Reading things that isn't related to their engine, and trying to make it work. That switch feeds the alarm, you will have to check the manual to see if it's also used for the ECM, but I doubt it does if it ran ok with it unhooked.

Next. RESIZE your image. WAY too big.

Oh ok. yeah the engine was working properly with it unhooked. I am planning on changing the switch or maybe just wait until I take it to a mechanic so he can hook it to a computer and tell me what the alarm is.

another question, can I cut the fuel line right before it gets to the water filter separator and install a primer bulb? Per the service bulletin that Don attached, it says that I should prime the system if it has been sitting for a while.

BTW the SN on the engine is 0W061980.

 

[Don S]

Re: Where should I spray seafoam on an MPI engine??

another question, can I cut the fuel line right before it gets to the water filter separator and install a primer bulb? Per the service bulletin that Don attached, it says that I should prime the system if it has been sitting for a while.

If you can't get the hose off the barb, yes, cut it. If the hose is then too short, put a new piece of type A1 fuel hose on it.

 

[JP_R]

Re: Where should I spray seafoam on an MPI engine??

can i leave the priming buld always connected?

 

[Don S]

Re: Where should I spray seafoam on an MPI engine??

To be quite honest, I think you would be better off taking it to your mechanic before you mess something up. Randomly disconnecting things is a good way to mess things up, and since you already think setting timing is over your head, checking out the EFI system is going to be way past that.

 

[CheapboatKev]

Re: Where should I spray seafoam on an MPI engine??

No shame in knowing your limits..Theres lots of simplier, smaller things you can read up on, ask questions here and get aquainted with.
Nothing worse than blindly making a 200.00 repair into a 2,000 eventual shop repair.

 

[JP_R]

Re: Where should I spray seafoam on an MPI engine??

well from what I read on the service bulleting, it looks like priming the system is very easy. My intentions are to get the boat running and then taking it to the mechanic.

I just want to do as much as possible due to the fact that I do not have to much $$$ to be paying $100 an hour to the mechanic. Labor is expensive in S. Florida.

I still need to get it hooked to the computer to find out if in fact the oil pressure switch is bad...

 

[JP_R]

Re: Where should I spray seafoam on an MPI engine??

Update I just installed the new starter. The old starter was in fact damaged.

The engine is turning over but I quite can't get it to start. I kindda wants to but does not. I think the battery might need charge. I might also need to buy a special starting battery.

The starter does tatatata and clunck. I checked for fuel delivery and it is working. The pressure realease valve has plenty gas.

After a few tries with no success, I decided to call it quits for today. I went to disconnect the battery and the terminal was extremely hot. Is this normal??? as a safety measure, I am going to change the terminal endings on all the cables.

any advice?

 

[HT32BSX115]

Re: Where should I spray seafoam on an MPI engine??

and the terminal was extremely hot. Is this normal???

Nope. This is NEVER normal. Heat is caused by a LOT of current flowing thru a high resistance.

That connection should be LOW resistance. You have a severely poor connection there to start with....... Clean it or replace it.




Regards,


Rick

 

[q5ka]

Re: Where should I spray seafoam on an MPI engine??

It could be hot if you just tried to start your motor multiple times. If they are hot from that, imagine how hot the starter is and how the old one became bad. If is has been a few minutes, then you have a bad connection somewhere. It is possible that while sitting, corrosion had developed from battery to power out. Maybe not giving enough voltage or current or similar. Look at your wires, clean the contacts, and charge the battery. If still problem, take it to a mechanic.

 

[Dshow]

Re: Where should I spray seafoam on an MPI engine??

For being short on $$, sounds like your throwing alot of $$ at it replacing parts that may or may not be bad. I would either take it to a marine mechanic or if you suspect a part is bad, read up on how that part operates in the system and troubleshoot that part. i.e. to see if your oil pressure switch is bad, use an ohmmeter to determine if the switch closes and opens when it should prior to replacing. If you've spent alot of time cranking, ensure your connections are clean and the battery is charged. If it's firing, you might measure your fuel pressure when cranking to ensure your building the proper pressure. Also, the alarms that were disconnected may be trying to tell you something, someone with a scan tool can read the ECM to see what issues it may have.

Good luck!

 

[JP_R]

Re: Where should I spray seafoam on an MPI engine??

Just a quick update. I cleaned all the electrical wiring terminals and reconnected. I also double checked the starter connection and everything seemed fine. I tried starting the engine and after a few tries it started.

After it finally started, I decided to take the boat to a mechanic for a once over and he recommended I changed the impeller and distributor cap and rotor. The distributor cap was all corroded. BIG part of the problem I was having.

I went ahead and gave him the go ahead to replace the impeller and replace the dist cap and rotor. Now the engines is turn key and no alarms.

I still need to take the boat for a sea trial but it ran fine with the hose and no alarms or anything.

I want to thank everyone for the help you guys gave me.

HAPPY BOATING
JP!!!

 

[Dshow]

Re: Where should I spray seafoam on an MPI engine??

Congrats!

 

[bruceb58]

Re: Where should I spray seafoam on an MPI engine??

You have to admit that it is pretty funny that this started out as a SeaFoam post and the solution is a starter and a distributor cap.

 

[Don S]

Re: Where should I spray seafoam on an MPI engine??

You have to admit that it is pretty funny that this started out as a SeaFoam post and the solution is a starter and a distributor cap.

Doesn't surpise me in the least. I work on these things and talk to customers for a living, and between what the customer says and thinks is the problem, and what the actual problem is, is seldom even close to being the same.
Unfortunately on this or any other forum, we seldom get to see, listen to, touch, or actually inspect for ourselves to see what the problem is. Normally we answer questions from people that can't describe the problem properly, or they ask the wrong questions, or fail go give needed information. makes the job of troubleshooting more of a WAG than actual troubleshooting.

 

[HT32BSX115]

Re: Where should I spray seafoam on an MPI engine??

You have to admit that it is pretty funny that this started out as a SeaFoam post and the solution is a starter and a distributor cap.

Well,



ANY Seafoam (snake-oil) post is suspect in my book!

 

[Don S]

Re: Where should I spray seafoam on an MPI engine??

Well,



ANY Seafoam (snake-oil) post is suspect in my book!

Uh Oh........ There goes the neighborhood.

If you know nothing about an engine, a little snake oil and some heavy advertisement will make you think your engine with no compression suddenly healed. It doesn't run any better, you just think it does because the ads say it will.

Fact is, if you keep your engine tuned up, oil changed, new gas running through it instead of 2 to 4 year old garbage gas, and actually run the boat at cruise speed once in a while to burn off the build up, instead of trolling all the time, you should never need Seafoam or anything like it in a marine IO engine.
It won't hurt anything, but it's also not a miracle cure all

 

[rodbolt]

Re: Where should I spray seafoam on an MPI engine??

and there goes my last investment stocks in snake oils.
dang, guess I gotta work for a living.

 

[HT32BSX115]

Re: Where should I spray seafoam on an MPI engine??

Uh Oh........ There goes the neighborhood.

If you know nothing about an engine, a little snake oil and some heavy advertisement will make you think your engine with no compression suddenly healed. It doesn't run any better, you just think it does because the ads say it will.

Fact is, if you keep your engine tuned up, oil changed, new gas running through it instead of 2 to 4 year old garbage gas, and actually run the boat at cruise speed once in a while to burn off the build up, instead of trolling all the time, you should never need Seafoam or anything like it in a marine IO engine.
It won't hurt anything, but it's also not a miracle cure all

I also hang out a bit on an old Ford truck site and there are some there that just think Seafoam and all the other "foams" are the "Bees Knees"!!! (must be that foaming action)

Marvel Mystery Oil is a VERY close second!!!!

We must be be vewey vewey careful though..........we don't want to hurt anyones feelings........(and don't be dogging Slick-50 either)

 

[Don S]

Re: Where should I spray seafoam on an MPI engine??

We must be be vewey vewey careful though..........we don't want to hurt anyones feelings........(and don't be dogging Slick-50 either)

is that stuff still around? I thought it got old and went away back in the 70's