Search found 11 matches
- Mon Jun 25, 2018 1:36 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: 1983 Johnson 70 dies at full throttle
- Replies: 5
- Views: 3534
Re: 1983 Johnson 70 dies at full throttle
Update: Took out the [so far unidentified] boat today with my son so I could pump the [fuel] primer [bulb on the fuel hose to the 1983 Johnson outboard engine] while [my son was] driving. [The 1983 Johnson 70 outboard engine] fired up first try and died after putting it in gear; tried to start engin...
- Sat Jun 23, 2018 9:34 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: 1983 Johnson 70 dies at full throttle
- Replies: 5
- Views: 3534
Re: 1983 Johnson 70 dies at full throttle
There are many places in the fuel system where the flow of fuel could be obstructed... I agree I will check cowling hose and float valves: The fuel tank, water separator, the primer bulb and check values and fittings are all 3 months old. Its been running great until we started tubing/wakeboarding....
- Sat Jun 23, 2018 12:26 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: 1983 Johnson 70 dies at full throttle
- Replies: 5
- Views: 3534
Re: 1983 Johnson 70 dies at full throttle
Fuel pump is the most likely culprit. Carburetors are fine - it's not likely that all three got dirty between one run and the next. See if you can keep it going by pumping the fuel bulb. If that works, then the pump isn't pumping and you'll have figure out why. If it's the original pump, it could w...
- Fri Jun 22, 2018 9:35 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: 1983 Johnson 70 dies at full throttle
- Replies: 5
- Views: 3534
1983 Johnson 70 dies at full throttle
I was taking my kids tubing, and the boat ran great for 10 to 15 minutes. Then while pulling them the 1983 Johnson 70 engine died at full throttle. The engine would start back up and then die again after three to fine minutes. I got her back to the dock and would start it with choke and it would run...
- Fri Jun 22, 2018 9:23 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
Update: It turns out it was the power pack, put a new one on and has been running pretty good.
- Tue Dec 05, 2017 11:20 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
Another quick update: it rained so I didn't take out [the boat] today but I did start [the Johnson 70-HP engine] in the driveway, again with the portable tank, new A1 lines, and REC-90 fuel. The engine started first try and idled for ten minutes with no problem. I will take it out Thursday to test i...
- Mon Dec 04, 2017 6:43 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
If there is no actuation of the electrical solenoid for the fuel enrichment circuit, check the wiring between the ignition key switch and the solenoid. The typical wiring is shown in the REFERENCE section article at http://continuouswave.com/whaler/reference/ignitionSwitch.html The circuit for the ...
- Mon Dec 04, 2017 11:54 am
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
You have to give more details about "will not start" and "will not crank." When I push in the key, I do not hear the primer valve click. The engine will turn over but will not start. It does this it seems every other boat trip. A couple days prior [the engine] started first try ...
- Mon Dec 04, 2017 11:51 am
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
jimh wrote:Is the fuel hose from the fuel tank to the engine made from a gray material with a metallic looking outer jacket?
It was :) I just ran out and bought A-1 black lines but it did have the b-1 gray lines on. I read another post where someone said these corrode easy and can restrict proper flow
- Mon Dec 04, 2017 11:50 am
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Re: Johnson 70 Runs Great Then Will Not Start
flymo wrote:No fuel problem will prevent the motor from cranking over on the starter - that has to be electrical. For starters, check the lanyard switch and jiggle the throttle to make sure it's really in neutral.
Ok thanks I will check that now
- Sun Dec 03, 2017 10:29 pm
- Forum: REPAIRS and MODIFICATIONS
- Topic: Johnson 70 Runs Great Then Will Not Start
- Replies: 14
- Views: 7257
Johnson 70 Runs Great Then Will Not Start
Hey guys--I recently bought for my son and daughter--and of course for me too--- a 1983 15-footer with a Johnson 70-HP. She is pretty. However, the [Johnson 70-HP outboard engine] will run fine one day, then the next day it will not crank. Three days ago this happened: --[engine] started right up --...