Primer vs. Choke

Primer vs. Choke

Post by SafetyRi » Sat, 17 Feb 1996 04:00:00


Let's debate primers and chokes.

Here's my initial argument, anyone else have comments?

I'm not real fond of primers.
The experiences I've had in trying to start a cold engine with a primer
have lead me to believe that chokes are better.  I have two Yamahas and
both have chokes.
Flip the lever,
turn the engine over and both of them fire right up.
Plus, you can leave them to warm up without having to
tend to the primer...giving a shot of gas when the idle starts to fall too
low.
I've only dealt with primers on Ski-doos, is this the problem?

=======================================
Todd Miller, Systems Engineer

'90 Phazer II
'94 Ovation

 
 
 

Primer vs. Choke

Post by SteveM52 » Sun, 18 Feb 1996 04:00:00


Quote:
(SafetyRisk) writes:
>Let's debate primers and chokes.

>Here's my initial argument, anyone else have comments?

>I'm not real fond of primers.

I've had both and from my experience the best combination is a Primer to
assist starting in cold weather and a ***enrichment asm for starting
when the sled is lukewarm.  I've found that the primer works ok but the
best system is more expensive for the manufacturers.  I'd like the choice
of at least adding a ***asm to SKIdoo's currently they can't do that.

Steve M.

 
 
 

Primer vs. Choke

Post by Byron Sheppa » Sun, 18 Feb 1996 04:00:00

The primer on my Ski-doos all seemed to work fine.  The chokes on my
current machiens (ArticCats) also work fine although I had to change
their setup from the factory defaults to get them right for the
atlitudes and temperatures I typically encounter.

So my experience is that you have to figure out the peculiarities of
your particular machine but having done that either one works fine.

A couple pulls cold and one pull warm seems to be do-able with either
setup.

Byron Sheppard
Vancouver BC.
95 EXT Powder Special
93 Panther

 
 
 

Primer vs. Choke

Post by kevin b gartne » Fri, 23 Feb 1996 04:00:00

My two cents about primers
I have recently purchased a 96 SLS ,I also own a 76 CHEETAh 5000.
Any person who would admit that the primer is superior is silly.
I have well over 10000 miles on the cheetaH And have never
flooded the engine. THE ***on the cat is idiot proof. I can
let anyone start it. the doo is real fussy it took me about a
month to learn it's quirks. It's nice to be able to get gas to
the heads quickly but a primer is not user friendly.

kevin gartner

--
a new purchaser and enthusiast for years

 
 
 

Primer vs. Choke

Post by Craig L. Cleas » Sat, 24 Feb 1996 04:00:00

Yamaha ***system is the best !

My family has owned 5 and all you do is move the ***lever to the
thrid position and pull the rope.

However Polaris is much more finicky , usually requires only half
***and floods much more easily

when we started my fathers 95 grand touring sle at -33f it took over
30 pushes of the primer to keep it going

Give me the Yamaha ***system any day

Craig in CT

 
 
 

Primer vs. Choke

Post by SKIDOMAC » Mon, 26 Feb 1996 04:00:00

the primer on my ski-doo works great.  there are ups and downs to chokes
and primers, heres my thoughts.
1.with a primer, you are injecting raw, unmixed gas with no lube in it
into the cylinders.
2.primers get the fuel into the cyl faster than chokes.
3. Chokes still take time to get fuel through the lines into the
cylinders, which requires pulling the machine over numorous times.
4. you are getting mixed fule with chokes.

overall, ill take the primer, i feel its a little more efficient.

 
 
 

Primer vs. Choke

Post by Race ral » Tue, 27 Feb 1996 04:00:00


Quote:
(SafetyRisk) writes:
>Let's debate primers and chokes.

The Ski-Doo people have told me that chokes flat out do not work on rotary
valve intake engines below a certain temperature (seems like -5 F was the
number).

This is why you see chokes on the non-rotary Ski-Doo engines, like the
triples and the smaller ones. But as for the rotary twins, you will likely
never see a choke.

I hated the primer too, but once you get used to it it is not all that
bad. Sure, I still prefer a choke, but once you understand how to get the
primer to work, it performs the function. The trick is knowing when you
are "pumping air", and when you are "pumping gas". Get this figured out,
and it's a breeze.

Kevin Beilke
Managing Editor
Snowmobiler's Race & Rally Magazine

 
 
 

Primer vs. Choke

Post by Jean Menar » Tue, 27 Feb 1996 04:00:00

The 1997 Grand Touring 583 has a ***(unless the sled at the Montreal show is not
a real production model).  It's a rotary valve twin!  Does that mean, that GT 583
owners will have a hard time starting their machines when it is below -5oF outside?

Jean Menard
1995 Grand Touring 580 (primer)

 
 
 

Primer vs. Choke

Post by SafetyRi » Tue, 27 Feb 1996 04:00:00

Here's another factor in this discussion:

Someone mentioned that chokes take longer to get fuel to the cylinders,
therefore taking more pulls to the engine to start.

Ok, then, what works better on electric start sleds, where this isn't a
problem?

On a related note, I noticed that starting my Phazer with the shoke takes
much fewer revs than the Ovation (both electric).  My guess would be that
this is because the Phazer has two carbs.  Also both carbs are larger than
the Ovation carb.  Good theory?

=======================================
Todd Miller, Systems Engineer

'90 Phazer II
'94 Ovation