Cruisers Forum
 


Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 22-06-2019, 06:47   #1
Registered User
 
Christiansailin's Avatar

Join Date: Feb 2011
Posts: 54
1971 Evinrude wonít start. Need troubleshooting ideas

Need guidance. Motor keeps turning over but wonít start. New plugs installed. Is getting fuel. Starter and cylinoid are only 3-4 years old and the boats only been in fresh water. Going to put new/fresh gas in it today. 1971 evinrude

What else should I check?
Christiansailin is offline   Reply With Quote
Old 22-06-2019, 07:30   #2
Registered User

Join Date: Jun 2011
Location: Texas
Boat: Baba 35
Posts: 299
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Spray some starter fluid and see if it wants to fire. If it doesn't check your plugs. New plugs gapped? Plugs have gas on them from carrying the motor around?
ttex is offline   Reply With Quote
Old 22-06-2019, 07:38   #3
Registered User

Join Date: Jun 2011
Location: Texas
Boat: Baba 35
Posts: 299
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Mine is having issue firing up because the needle and float are having problems in the carb. It isn't stopping the gas from flooding it. I am taking that apart today.

I am learning these things from my father as he helps me with my outboard. He is pretty good.
ttex is offline   Reply With Quote
Old 22-06-2019, 08:43   #4
Registered User

Join Date: May 2013
Location: Poole
Boat: Parkstone Bay 21
Posts: 167
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

She's a 2-stroke? I've a mid 1980's Mariner which had been in store over 5 years. When I took the carb to bits (which wasn't eye-wateringly difficult), I was expecting to see gummy deposits where the fuel had evaporated. Yes, it had been run dry last time used, but there would still be a very thin layer of fuel over the various carb surfaces. But, even the gummy deposits had evaporated, leaving an almost chalky deposit, Fortunately, they cleaned up reasonably ok with meths (alcohol) and a toothbrush. I also recommend very fine inter-dental brushes to clean out the jets. But I hope my hygenist doesn't read this!
parkstone bay is offline   Reply With Quote
Old 22-06-2019, 09:10   #5
Marine Service Provider

Join Date: Dec 2009
Location: Northland, NZ
Boat: Woods Vardo 34 Cat
Posts: 3,793
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Probably needs points and condensers. Does it have spark?
__________________
@mojomarine1
Boatguy30 is offline   Reply With Quote
Old 22-06-2019, 09:20   #6
Registered User

Join Date: May 2013
Location: Tilloo Cay, Abaco, Bahamas
Boat: Catalina 42
Posts: 186
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Fuel, compression, and spark. All you need. Which donít you have?
Empty Pockets is offline   Reply With Quote
Old 22-06-2019, 11:42   #7
Registered User

Join Date: Dec 2010
Location: W Carib
Boat: Wildcat 35, Hobie 33
Posts: 13,125
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

A very high % of small engine issues are carb related. If its getting spark then I would next tear down the carb to inspect/clean.
belizesailor is offline   Reply With Quote
Old 22-06-2019, 11:59   #8
Registered User

Join Date: Dec 2007
Location: West Virginia
Boat: Cape Dory, Cutter,30
Posts: 186
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

I converted my old 1974 Evinrude and Johnson 2hp outboards to solid state. They have better spark and start in wet weather.
moctrams is offline   Reply With Quote
Old 23-06-2019, 08:14   #9
Registered User
 
wedivebc's Avatar

Join Date: Oct 2015
Location: Vancouver Island
Boat: Hallberg Rassy Rasmus 35
Posts: 92
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

A motor of that age, I would be checking compression
wedivebc is offline   Reply With Quote
Old 23-06-2019, 09:56   #10
Registered User

Join Date: Jun 2019
Location: Leigh NZ
Boat: Oyster 56
Posts: 49
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

As stated above motors just need compression, spark and fuel to run.
You say it won’t start rather than it won’t turn over so I presume it’s cranking ok.
Don’t rush to pull carbs apart until you have positively confirmed which of these three is the issue.
I’d usually start by pulling the plugs setting them on the block so they can get an earth and getting someone to key the starter. In bright sunlight you may struggle to see the spark, so do in the shade. You mention solenoid and starter so I guess larger motor which at 71 would have solid state ignition.
Then if you have a spark and if you have the tool run a compression test. You are looking for compressions all within 10psi.
Assuming you have a spark and compression then check fuel. Electric start 71 Evinrudes are likely to be multi carb motors so a no start (rather than a misfire) is likely to be upstream from carb. Is the choke operating? Is the primer bulb pumping up hard? Can you hear the float chambers filling as you prime alternatively can you push fuel through and out the carb bowl drain screws with the primer bulb?
When you post back please include details of motor .
PhilC is offline   Reply With Quote
Old 24-06-2019, 10:31   #11
Registered User

Join Date: May 2018
Location: Vancouver Island
Boat: Grampian 26
Posts: 43
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

If its a 2-stroke, and it has spark then its most likely carb related. I might take the spark plug out and see if it is wet with fuel at all (flooding). If not then try squirting a small quantity (tsp) of gas into the spark plug hole, reinstall the plug and try starting. If it tries to fire you know there is life in the beast. Then concentrate on cleaning out the carb. Not really that hard. Just work in a clean area and be methodical and dont spare the "carb cleaner".
Calaban-Alleria is offline   Reply With Quote
Old 24-06-2019, 11:13   #12
Senior Cruiser
 
GordMay's Avatar

Cruisers Forum Supporter

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 43,285
Images: 241
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Quote:
Originally Posted by Calaban-Alleria View Post
If its a 2-stroke ...
Evinrude only manufactured 2-stroke engines. They introduced direct-injection E-Tec (2-Stroke) models in the 1990's.
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is offline   Reply With Quote
Old 25-06-2019, 06:08   #13
Registered User

Join Date: Jun 2009
Location: Annapolis, MD
Boat: Gozzard, 44CC, 50'
Posts: 444
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

The internal seals and fuel lines on the pre -ethanol engines will melt and clog the carb and fuel pump with today's ethanol gas. Replace them with current, ethanol rated material. Also make sure your fuel is fresh and the oil mixture is correct. JMHO
Scrimshaw4 is offline   Reply With Quote
Old 25-06-2019, 15:11   #14
Registered User

Join Date: Jun 2019
Location: Spain or the MED in general
Boat: Friends Yachts now!
Posts: 19
Re: 1971 Evinrude wonít start. Need troubleshooting ideas

Hi, Many fuel problems with 2 strokes are related to the "varnishes" or residue that is left in your entire fuel system from 2 stroke oils.
JUST USE REGULAR OIL 15w40 or anything your engine uses at about 50 to 1 ratio and NO RESIDUE will be left to block the jets. 2 hp to 200 hp 2 stroke.
Advantages include cooler piston and more power. Always leaving clean internal bearings with oil (NOT VARNISH RESIDUE)
Leaves your tank very clean.
Disadvantages are : Although hard to find there is a small amount more smoke when cold for about 30 seconds.
Possibly a slightly higher emissions as this is the main reason that special agents are added to 2 stroke oil to vaporize and burn cleaner. However the engine suffers from this lack of lubrication from blocked jets (= less oil) over time.
This is real and not just an idea! Cheers John.
John Engineer is offline   Reply With Quote
Old 03-07-2020, 13:00   #15
Registered User
 
Christiansailin's Avatar

Join Date: Feb 2011
Posts: 54
1971 Evinrude wonít start. Need troubleshooting ideas

So after weeks of troubleshooting and eventually giving up and dragging her to a mechanic, hereís what happened. The mechanic checked compression which was only at 50%, removed his tools and called me to say junk it and pay $100. I asked if he checked the carbs which he had not so I brought her home, pulled both carbs, soaked them in Seafoam, reinstalled and.....got her humming. She runs a little rough but she runs.
Christiansailin is offline   Reply With Quote
Reply

Tags
evinrude

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Troubleshooting solar setup... or troubleshooting my troubleshooting!! basssears Electrical: Batteries, Generators & Solar 151 27-08-2018 08:41
Yanmar 2GM Won't Fire - Troubleshooting Evan Burkosky Engines and Propulsion Systems 40 09-06-2017 23:40
Cooling water in Evinrude Yachtwin 4 Evinrude SkiprJohn Auxiliary Equipment & Dinghy 5 22-05-2013 22:01
Content Ideas for a Broker's Website - Ideas Wanted! David_Old_Jersey Dollars & Cents 69 02-11-2012 09:56
Had to abandon ship. Won't start! knottybuoyz Engines and Propulsion Systems 22 25-03-2011 15:06

Advertise Here


All times are GMT -7. The time now is 11:52.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.