compression needed

R

robert53a

Petty Officer 2nd Class
Joined
Dec 27, 2007
Messages
181
I have a little 2 hp Evinrude mate 1971 210a that was given to me and I have gone through it to tune it up, checking the magneto and cleaning the carb. i can't get it to fire off, just a few pops and a backfire. I check the compression and found it will has 60psi. Is this enough to support ignition? Any help would greatly be appreciated. Thanks.....Robert
 
bktheking

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: compression needed

robert53a said:
I have a little 2 hp Evinrude mate 1971 210a that was given to me and I have gone through it to tune it up, checking the magneto and cleaning the carb. i can't get it to fire off, just a few pops and a backfire. I check the compression and found it will has 60psi. Is this enough to support ignition? Any help would greatly be appreciated. Thanks.....Robert
Click to expand...

It's not awesome compression but it should fire up. When you had the flywheel off was the keyway there in the crank? Did you torque the flywheel to proper spec? Did you set the high and low speed needles up properly on the carb to allow it to fire?
 
Last edited:
kbait

kbait

Commander
Joined
Nov 13, 2007
Messages
2,449
Re: compression needed

It's a single cylinder, and it should run w/60. Check spark w/tester to ensure 1/4" non-intermittent blue spark, and spray a little pre-mix in the carb. Should run for a few seconds if it's a carb issue.
 
bktheking

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: compression needed

kbait said:
It's a single cylinder, and it should run w/60. Check spark w/tester to ensure 1/4" non-intermittent blue spark, and spray a little pre-mix in the carb. Should run for a few seconds if it's a carb issue.
Click to expand...

Duh, me dumb LOL

ya , screw it, check all 6 plug holes for compression.:p
 
R

robert53a

Petty Officer 2nd Class
Joined
Dec 27, 2007
Messages
181
Re: compression needed

Hi, didn't remove the the fly wheel It has asome spark and didn't think I needed to. I set the high speed needle at 1 turn out from bottom and the low speed at 1 1/2 turns out. After the pops I pulled the plug and notice is was wet with gas. I mave have flooded it. I'll try again in the am. Thanks for the help. If it still pos and back fires , I'll pull the fly wheel and check to see if the key is sheer and the point are good.(but it does have good spark)????
 
bktheking

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: compression needed

robert53a said:
Hi, didn't remove the the fly wheel It has asome spark and didn't think I needed to. I set the high speed needle at 1 turn out from bottom and the low speed at 1 1/2 turns out. After the pops I pulled the plug and notice is was wet with gas. I mave have flooded it. I'll try again in the am. Thanks for the help. If it still pos and back fires , I'll pull the fly wheel and check to see if the key is sheer and the point are good.(but it does have good spark)????
Click to expand...

Good spark yes, sheared key, bad timing, pops and backfires.
 
R

robert53a

Petty Officer 2nd Class
Joined
Dec 27, 2007
Messages
181
Re: compression needed

Hi, just a follow up, I pulled the fly wheel and found nothing wrong, points set at .020 and clean shear key intact. Reassymble and retorque and still nothing.(good hot spark) This one will go on craigslist as free. It's beyond where I want to go.(total rebuild) Thanks for you guys insight, it was much appreciated......Robert
 
bktheking

bktheking

Vice Admiral
Joined
Jul 29, 2008
Messages
5,057
Re: compression needed

Wish I lived near you, giving away anything else??? 66 Nova that won't start perhaps? :)
 
samo_ott

samo_ott

Vice Admiral
Joined
Jun 18, 2006
Messages
5,125
Re: compression needed

Wish I lived closer! Wait. I'm gonna be in Carleton Place in the morning!
 
samo_ott

samo_ott

Vice Admiral
Joined
Jun 18, 2006
Messages
5,125
Re: compression needed

Ugh. Coffee. Ptuii!

Gotta work on Judson street...
 
You must log in or register to reply here.
Top