SuzukiSavage.com - Print Page

SuzukiSavage.com
/cgi-bin/YaBB.pl
General Category >> Rubber Side Down! >> When to not choke a cold engine?
/cgi-bin/YaBB.pl?num=1252548882

Message started by DrunkenDwarf on 09/09/09 at 19:14:41

Title: When to not choke a cold engine?
Post by DrunkenDwarf on 09/09/09 at 19:14:41

I was wondering if anyone else found that the engine warms up better on hot days with no choke.

Any guesses on the temperature where the switch is?

-D. Dwarf

Title: Re: When to not choke a cold engine?
Post by voldigicam on 09/09/09 at 19:35:05

I just listen. Full choke only for a very short time. Then gradually click in. Doesn't take long.

Title: Re: When to not choke a cold engine?
Post by boofer on 09/09/09 at 19:40:59

Gasoline vaporizes slowly on cool days and faster on warm or hot days. The choke creates a rich fuel/air mixture to offset the slow rate of vaporization. That's why most of us don't have to use choke on hot days.

I would guess that each machine would be different according to tune or overall condition of the engine. Boofer

Title: Re: When to not choke a cold engine?
Post by drharveys on 09/09/09 at 19:53:22

4B540D4B594D0D3A0 wrote:

I would guess that each machine would be different according to tune or overall condition of the engine. Boofer

Are you implying that these bikes are a bit idiosyncratic?

Title: Re: When to not choke a cold engine?
Post by boofer on 09/09/09 at 20:04:49

Charles Manson is a "bit idiosyncratic". Our bikes are like a two year old child after a trip to Chuckie Cheese. Boofer

Title: Re: When to not choke a cold engine?
Post by Trippah on 09/09/09 at 20:53:38

The point is well made..if you have to choke it to start on a day when the temp is over 60 (F) then you probably should consider making some adjustments. :)

Title: Re: When to not choke a cold engine?
Post by 4carbcorvair on 09/10/09 at 16:37:48

4F69726B6B7A731B0 wrote:

The point is well made..if you have to choke it to start on a day when the temp is over 60 (F) then you probably should consider making some adjustments. :)

I had to choke mine anytime it sat for extended amounts. After my main, pilot, and spacer mod, I haven't needed the choke.

Title: Re: When to not choke a cold engine?
Post by JustPassinThru on 09/14/09 at 22:27:49

Using a choke will flood the cylinder walls with gasoline, which washes down past the rings and into the crankcase.

Diluting the oil and increasing wear.

This, according to my Jeep wrench, is why fuel-injected cars are lasting so much longer than the old carbureted models of yesteryear...the fuel injection limits this cold-start issue and feeds the RIGHT AMOUNT of fuel for a start...no washdown, no oil dilution, less wear.

At least, when the FI is working right.

So...my own hard-and-fast rule, FWIW is...don't use the choke unless absolutely necessary. I've found my own machine starts right up cold, no goosing the throttle, no choke...this in 65-70 degree temps.

Of course it doesn't run very well under load, so I let it idle for about fifteen minutes before starting out.

Title: Re: When to not choke a cold engine?
Post by PerrydaSavage on 09/15/09 at 00:14:48

I adjusted my fuel/air screw a bit (to run a bit richer) and now Bike will start on 1/2 choke pretty much down to freezing temps. Gentle Ride for a kilometer or so then choke all the way in ... of course on a warm day doesn't require any choke at all ...
My previous '03 Savage which had stock set-up on everything, the usual ritual on a standard cool-ish Nfld, day was; full choke to start, no throttle ... immeaditly push in to 1/2 choke, idle for a minute, gentle Ride for about 1km, choke all the way in ... smooth running!

Title: Re: When to not choke a cold engine?
Post by BurnPgh on 09/15/09 at 01:04:35

My bike will not start at any temp with full choke. It just wont. I usually pull it out to half choke for a minute or two as per the manual. If its 70ish I dont NEED any choke but the bike starts off stumbly for a minute or so then smoothes out so I usually pull the choke half way no matter what even if only for 30 seconds or so. The only time I dont need some choke is if I've ridden within the last 4 hours. If I stop and chill at home a while and get back on within a few hours Im good.

Title: Re: When to not choke a cold engine?
Post by ero4444 on 09/15/09 at 09:30:04

I don't never choke no cold engine - no how, nosirree.

mine is unmodified and it starts best with full choke, let it run for 10 seconds then 1/2 choke for 3 minutes until warm.

Title: Re: When to not choke a cold engine?
Post by verslagen1 on 09/15/09 at 09:47:20

between you and bill I have a headache. :o