ZR EFI Flooding out??

SabercattF7 · 12-18-2002, 01:33 PM

I have a 1997 ZR 580 EFI and when it is cold or has sat for a 1/2 hour or so it starts right up, BUT if I ride it and shut it off and try to start it again, It will start for a sec and stall, And wont start again unless I hold it right to the bar and pull it over, and with a few pulls will start but cant get the RPMs up for a few sec and then it will Run fine, untill I shut it off again, Is it flooding out? and if so does anyone no why?

Rich

SnORaCeRZR440 · 12-18-2002, 02:52 PM

I remember reading in an old Snow Tech of 1997 ZR 580 Early releases had a problem flooding out because their computer chips were set way too rich and a chip off the 97 full production machine had this problem fixed.

team arctic · 12-18-2002, 03:16 PM

Have you done a cold compression and warm compression test on it? Marc

SabercattF7 · 12-18-2002, 05:02 PM

It has a black magic Trail chip in it for like 3 years now, and it Just started doing it one day when I was getting gas, And I did not try the cold and warm compreshion test, But I will, I just put new pistons and Rings in it last year, and I just took a look at the pistons and Rings the other day and they look good still.

kenzr · 12-18-2002, 09:29 PM

You might want to check the water temperature sensor connection on the side of the water manifold. I had problems with mine coming off while running. (Easy to find and fix) The computer goes to a full rich mode, and while it would run performance was off. When I stopped it was next to impossible to get re-started (warm, was fine cold) . I crimped the connector to get it to stay on, but apparently it got moisture into it and corroded the connection, then the problem became intermittent. I finally modified the connector, removed the press on cap and installed a screw on cap with some dieelectric grease. Two years now and and no problems.

Kenzr (watching it rain in MN)

SabercattF7 · 12-18-2002, 10:39 PM

Hey Kenzr

Thanks, as I read the first line you wrote I new thats what it was becouse I have a broken wire on that senser, But did not no if it was broke before this started to happen or not, But I guess you just answered that question,

Thanks Again for your help!!!

deanm · 12-19-2002, 11:47 PM

Keep in mind, all efi AC sleds are designed to go into a limp (rich) mode when a sensor fails. lol

acguy02 · 01-01-2003, 04:42 PM

and if all else fails look at the air inlet on the airbox

ods dan · 01-01-2003, 04:59 PM

Just one thing I had last year...An efi sleds fuel injector was dripping...?? It got a little worse mileage and would load up a bit. You may be able to pull them out and look at them with pressure in the line , see if one drips??

12-18-2002, 02:52 PM	#2 (permalink)
SnORaCeRZR440 Super Advanced Member Join Date: Dec 2002 Posts: 128	I remember reading in an old Snow Tech of 1997 ZR 580 Early releases had a problem flooding out because their computer chips were set way too rich and a chip off the 97 full production machine had this problem fixed. __________________ The two most envied, feared, and sucessfull letters snowmobiling has ever seen - ZR

12-18-2002, 09:29 PM	#5 (permalink)
kenzr Super Advanced Member Join Date: Dec 2002 Posts: 208	You might want to check the water temperature sensor connection on the side of the water manifold. I had problems with mine coming off while running. (Easy to find and fix) The computer goes to a full rich mode, and while it would run performance was off. When I stopped it was next to impossible to get re-started (warm, was fine cold) . I crimped the connector to get it to stay on, but apparently it got moisture into it and corroded the connection, then the problem became intermittent. I finally modified the connector, removed the press on cap and installed a screw on cap with some dieelectric grease. Two years now and and no problems. Kenzr (watching it rain in MN) __________________ As I have matured: I've learned that artificial intelligence is still no match for natural stupidity.

01-01-2003, 04:59 PM	#9 (permalink)
ods dan Super Advanced Member Join Date: Dec 2002 Posts: 10,709 Location: MA	Just one thing I had last year...An efi sleds fuel injector was dripping...?? It got a little worse mileage and would load up a bit. You may be able to pull them out and look at them with pressure in the line , see if one drips?? __________________ The Outdoor Shop Inc.

12-18-2002, 01:33 PM	#1 (permalink)
SabercattF7 Super Advanced Member Join Date: Dec 2002 Posts: 743	I have a 1997 ZR 580 EFI and when it is cold or has sat for a 1/2 hour or so it starts right up, BUT if I ride it and shut it off and try to start it again, It will start for a sec and stall, And wont start again unless I hold it right to the bar and pull it over, and with a few pulls will start but cant get the RPMs up for a few sec and then it will Run fine, untill I shut it off again, Is it flooding out? and if so does anyone no why? Rich

12-18-2002, 03:16 PM	#3 (permalink)
team arctic Super Advanced Member Join Date: Dec 2002 Posts: 930	Have you done a cold compression and warm compression test on it? Marc

12-18-2002, 05:02 PM	#4 (permalink)
SabercattF7 Super Advanced Member Join Date: Dec 2002 Posts: 743	It has a black magic Trail chip in it for like 3 years now, and it Just started doing it one day when I was getting gas, And I did not try the cold and warm compreshion test, But I will, I just put new pistons and Rings in it last year, and I just took a look at the pistons and Rings the other day and they look good still.

12-18-2002, 10:39 PM	#6 (permalink)
SabercattF7 Super Advanced Member Join Date: Dec 2002 Posts: 743	Hey Kenzr Thanks, as I read the first line you wrote I new thats what it was becouse I have a broken wire on that senser, But did not no if it was broke before this started to happen or not, But I guess you just answered that question, Thanks Again for your help!!!

12-19-2002, 11:47 PM	#7 (permalink)
deanm Advanced Member Join Date: Dec 2002 Posts: 53	Keep in mind, all efi AC sleds are designed to go into a limp (rich) mode when a sensor fails. lol

01-01-2003, 04:42 PM	#8 (permalink)
acguy02 Newbie Join Date: Dec 2002 Posts: 6	and if all else fails look at the air inlet on the airbox

Remove Advertisements Sponsored Links
Hardcore Sledder Snowmobile Forums Advertisement