could this issue be the fuel pump

[fireman57]

Re: could this issue be the fuel pump

Sounds like a plan. I think you did get this engine hotter than it should have been. If you had one plug that was clean and the others were tan that indicated water, usually from overheating. Make sure when you change the impeller on the water pump that you find all the splines if any or missing. If you don't have them all some of the broken pieces can lodge in a water passage and restrict your flow even with a new pump. You will need to find them. That would require taking the head off anyway to check them there. Hopefully you won't have to take the exhaust side off too. If you found the threads on putting a telltale on this engine it is a great time to do it while you have the head off. You will be able to see how far you actually go through the top to install the nipple you will screw into it.

 

[rpatton]

Re: could this issue be the fuel pump

ok guys i took the lower unit off to see if i was going to need any unexpected parts and to my amazement the impeller is in pretty good shape for as long as it was in there ' all intact and no missing pieces just a little dry rot. and yes i will be replacing the entire pump with a kit along with the thermostat. one question i do have ' is there a trick or some knolege i dont have on hooking the shift rod back up it looks like it will be a real bugger to slide the lower up and align the rod and then somehow try to get the bolt back in.

 

[gm280]

Re: could this issue be the fuel pump

Just did that exact same thing yesterday. And it actually went back together very easy. And then I thought, did I get the water tube into the water pump housing correctly. Not knowing for sure, I removed it again and reinstalled to verify all tubes and drive shaft and shift linkage was indeed in the correct places. So it isn't that difficult to install the lower foot back to the exhaust housing... I got the water tube started first and then while holding the foot, attached the long bolt in the back of the foot first and threaded it in a few turns to help hold everything together... And with just a little wiggling the drive shaft and shift linkage both aligned easy too... So don't worry too much about it. It will go back together just fine...

 

[sutor623]

Re: could this issue be the fuel pump

Yup sure will. You may have to spin the flywheel a bit to align the splines. Tip: Make SURE that you clean up the driveshaft splines, and put some fresh marine grease on it before reinstalling it. There are some nightmares and horror stories about that shaft seizing into the crank, preventing the lower unit from dropping. You do NOT want that to happen down the road.....

 

[rpatton]

Re: could this issue be the fuel pump

Thanks guys ill see how it goes when the parts come in

 

[rpatton]

Re: could this issue be the fuel pump

Ok guys heres an update. Water pump is in which was easy . Next took it to the water and she started right up so we left the slip and and got to wot for about 75 yards and it did the exact same thing with the surging of rpm and then bogging with no power all the way back. Assoon as i pulled the throttle back she died. Primer bulb was hard. Cranked it a few times then she started and idled great but as soon as i went to wot it started again. I went and got new plugs even though mine looke good . Thats when i pulled the plug wire from the middle cylinder and to my suprise it fell into the water. Is it possible that the wire was shorted causing all my issues or did i just ad to my problems. I have a new coil kit ordered.

 

[sutor623]

Re: could this issue be the fuel pump

Hmmmm sorry to hear this. I believe you have a stator or timer base issue (electrical). Get out you volt meter (and DVA meter) and start testing current. Johnson troubleshooting starts on page 30, you just have to find your motor section. ISSUU - CDI Electronics Troublbshooting Guide - 2012 by CDI Electronics

 

[rpatton]

Re: could this issue be the fuel pump

If i had stator or timing issues would that happen from just sitting over night because it ran great all day untill i parked it in the slip then i filled both fuel cells and hooked them back up the next day and that is when all these issues started. I cant help but think it is something to do with when i refueled. But i am glad for and will take any advise

 

[sutor623]

Re: could this issue be the fuel pump

i filled both fuel cells and hooked them back up the next day and that is when all these issues started.

Okay, well you left that part out. Lots of times electronics fail as they get hotter. SO.... you can be cruising around fine and dandy, then all of the sudden, BAM, problems.

 

[rpatton]

Re: could this issue be the fuel pump

So bare with me here, you guys think that it had nothing to do with fuel or lines or delivery . And the bad coil wire is just an added problem i need to fix. Your saying that your thinking its eletronic. Sorry for being thick headed

 

[sutor623]

Re: could this issue be the fuel pump

Well I am offering suggestions on what I would troubleshoot. I don't see how refilling the two fuel tanks would ignite any problems here. And if it is intermittent, I have a hard time thinking it is fuel related. Let me ask you this, does it seem to get worse as the motor continues to get hotter?

 

[rpatton]

Re: could this issue be the fuel pump

First off i am extremely glad your taking the time to help me. To answer your question no it does not get worse the hotter ot gets. What it does is , starts great idles fine but when i go to wot it runs great and normal for about 75-100 yards on plane then it starts to surge and the i back it off and try again but then the rpm will not go to wot even though the throttle is full forward and it bogs and strugles . If i pull it back to idle it dies and it will start after a lot of cranking and then it will run and idle untill i go wot again. Sonds to me like runing out of fuel but i have plenty of gas , new fuel pump and rebuilt carbs.

 

[sutor623]

Re: could this issue be the fuel pump

Sounds to me like it is having problems when it is hot. Think about it, it starts up fine when you leave the dock, hits WOT, then once the motor gets a bit hot, starts having problems. Hell it even has a hard time starting after the issues surfaces. Im voting electrical issue.

 

[rpatton]

Re: could this issue be the fuel pump

Do you think maybe it was just that coil where the sparkplug wire actuly fell off the coil. Sorry for all the the questions its just i am only at the boat on weekends because it is at the shore and im trying to trouble shoot during the week

 

[sutor623]

Re: could this issue be the fuel pump

E when you popped the hood the wire was loose? It could have done it if it was in fact loose. Guess you're going to have to wait and see.

 

[rpatton]

Re: could this issue be the fuel pump

Dont know if it was loose or not all i know is it fell off when i pulled it to change the plug. Question though . Do the plug wires screw in or are they formed into the coil

 

[sutor623]

Re: could this issue be the fuel pump

Hmmm not sure. I think they just press onto the coil just like te spark plugs. Thinking that the coil wire was loose is probably just wishful thinking, I wouldn't bet on it.

 

[rpatton]

Re: could this issue be the fuel pump

Whishfull is all i got. So you guys are thinking its the stator. Im not very good with trouble shooting electronics

 

[sutor623]

Re: could this issue be the fuel pump

Well I don't know about us guy(s) but I think it's electrical. And we can't point fingers directly at the stator, there are other components that will need checking. Look up the link I sent you and find your motor in the table of contents. Should be page 35

 

[rpatton]

Re: could this issue be the fuel pump

Thanks for the help ill look it up hopefuly i can make sense of it.