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Recent posts
#1
Girly Talk (1999 - 2006 Tigers) / Re: non regular idle revs on 8...
Last post by Flyingwombat - Today at 10:32:09 PMHey man, probably see my other thread, it's long winded but.
1. Battery - ensure charged and healthy
2. Fuel trims with TuneECU - make a note of the map, trims, and IACV settings before fiddling
3. Check all cylinders are firing at idle by turning it on and checking exhaust outlets for warmth (thermal camera or burn your hands methods are acceptable) - issue here could be spark plugs
3. Throttle cable adjustment and free movement - should not stick, best to do with tank off
4. IACV function, throttle body balancing and vacuum leaks - Sort any issues (loose balancing screws is a thing) If you see any backfiring into the throttle body then consider timing issues and valve clearances
5. Engine map - check it is up to date
6. Fuel pump test (listen for abnormal squealing), fuel pressure, injector function - replace injector seals (lubricated with engine oil) if injectors are removed, clean them at the same time.
Guides for most of these things are on here, or you can find on youtube (Delboys Garage has a whole section on Tigers). I would also download the 885i user manual for the right VIN too
1. Battery - ensure charged and healthy
2. Fuel trims with TuneECU - make a note of the map, trims, and IACV settings before fiddling
3. Check all cylinders are firing at idle by turning it on and checking exhaust outlets for warmth (thermal camera or burn your hands methods are acceptable) - issue here could be spark plugs
3. Throttle cable adjustment and free movement - should not stick, best to do with tank off
4. IACV function, throttle body balancing and vacuum leaks - Sort any issues (loose balancing screws is a thing) If you see any backfiring into the throttle body then consider timing issues and valve clearances
5. Engine map - check it is up to date
6. Fuel pump test (listen for abnormal squealing), fuel pressure, injector function - replace injector seals (lubricated with engine oil) if injectors are removed, clean them at the same time.
Guides for most of these things are on here, or you can find on youtube (Delboys Garage has a whole section on Tigers). I would also download the 885i user manual for the right VIN too
#2
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by Flyingwombat - Today at 09:43:36 PMOh good. I'll get on with it then.
Hopefully no lasting damage.
Hopefully no lasting damage.
#3
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by the slow heart - Today at 01:30:13 PMWe all have our funny and unforgettable memories from the garage 
This manifold backfire suggests inlet valve on no.2 is not completely closing and compression phase pumps back air/fuel mixture in the manifold, exploding with some correlation to no.2 firing time. It is serious suspicion that could lead to valve/piston further complications. I would do valve clearances first and check compression after. Then if no.2 shows lower pressure, head has to go off and valve seat potential damage cleared out until it is withing recoverable limits. Fiddling with fuel mapping should be no priority in such situation
This manifold backfire suggests inlet valve on no.2 is not completely closing and compression phase pumps back air/fuel mixture in the manifold, exploding with some correlation to no.2 firing time. It is serious suspicion that could lead to valve/piston further complications. I would do valve clearances first and check compression after. Then if no.2 shows lower pressure, head has to go off and valve seat potential damage cleared out until it is withing recoverable limits. Fiddling with fuel mapping should be no priority in such situation
#4
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by Flyingwombat - April 25, 2024, 08:48:08 PMSo this is a little funny, and slightly embarrassing.
It turns out that the lambda sensor on my exhaust is not plugged in, and never has been. The cat on the exhaust must have got replaced after an accident I'm guessing from a scrapped bike. So this would explain a lot.
I have loaded the 9891 map and it's working again. I have also replaced the spark plugs due to the fouling, and set all the trims back to 0.
I am back to square 1. The bike is working, throttle bodies are balanced but it's still surging.
Looking at the pump pressure this seems fine.
What I have noticed is that there appears to be some backfiring, into cylinder 2 which is not noticeable when throttle is open, but when it is closed you can hear a hiss and see a small flash in throttle body 2, there is no popping in throttle body 2 when the throttle valves are open. I am slightly concerned that I can see a flash in body 2, as this means it's not fully air tight when closed, although it appears balanced with the throttle touching the motion limiting screw.
So here's some numbers at idle @1180 RPM
Ignition Timing is at 4.5deg target dwell times of 1.8, 1.8, 1.9ms and Ignition Pulse times of 1.801, 1.696 and 1.740ms(in 1,2,3 order)
@1260 RPM
Ignition Timing is at 5.5deg target dwell times of 1.9, 1.8, 1.8ms and Ignition Pulse times of 1.798, 1.737 and 1.904ms(in 1,2,3 order)
The valve shims do need to be done too at some point, but I am wondering if my injector in cylinder 2 is leaking slightly.
It turns out that the lambda sensor on my exhaust is not plugged in, and never has been. The cat on the exhaust must have got replaced after an accident I'm guessing from a scrapped bike. So this would explain a lot.
I have loaded the 9891 map and it's working again. I have also replaced the spark plugs due to the fouling, and set all the trims back to 0.
I am back to square 1. The bike is working, throttle bodies are balanced but it's still surging.
Looking at the pump pressure this seems fine.
What I have noticed is that there appears to be some backfiring, into cylinder 2 which is not noticeable when throttle is open, but when it is closed you can hear a hiss and see a small flash in throttle body 2, there is no popping in throttle body 2 when the throttle valves are open. I am slightly concerned that I can see a flash in body 2, as this means it's not fully air tight when closed, although it appears balanced with the throttle touching the motion limiting screw.
So here's some numbers at idle @1180 RPM
Ignition Timing is at 4.5deg target dwell times of 1.8, 1.8, 1.9ms and Ignition Pulse times of 1.801, 1.696 and 1.740ms(in 1,2,3 order)
@1260 RPM
Ignition Timing is at 5.5deg target dwell times of 1.9, 1.8, 1.8ms and Ignition Pulse times of 1.798, 1.737 and 1.904ms(in 1,2,3 order)
The valve shims do need to be done too at some point, but I am wondering if my injector in cylinder 2 is leaking slightly.
#5
Steamers (1993-1998 Tigers) / MOVED: non regular idle revs o...
Last post by London_Phil - April 24, 2024, 07:50:31 PMThis topic has been moved to Girly Talk (1999 - 2006 Tigers).
https://tigertriple.com/forum/index.php?topic=17563.0 Wrong model
https://tigertriple.com/forum/index.php?topic=17563.0 Wrong model
#6
Girly Talk (1999 - 2006 Tigers) / non regular idle revs on 885i
Last post by stefanjochems - April 24, 2024, 05:42:44 PMdear readers,
i have a tiger 885i from 1999 and there is something strange with the idle revs. when i start the bike the reves are high 3000rpm. after a minute it goes doen to 2000rmp.
after a minute or so the rev is 1200. When i drive an the engine is warm the revs are unstable. for a traffic light the revs can go up to 2500 or higher end the next trafic light the rev is 1200. The fuel consumption is ok 1 on 18/19.
what can i check to solve this issue. the strange part is that during one trip the rpm is unstable.
please some tips 🙂
Thanks
i have a tiger 885i from 1999 and there is something strange with the idle revs. when i start the bike the reves are high 3000rpm. after a minute it goes doen to 2000rmp.
after a minute or so the rev is 1200. When i drive an the engine is warm the revs are unstable. for a traffic light the revs can go up to 2500 or higher end the next trafic light the rev is 1200. The fuel consumption is ok 1 on 18/19.
what can i check to solve this issue. the strange part is that during one trip the rpm is unstable.
please some tips 🙂
Thanks
#7
Girly Talk (1999 - 2006 Tigers) / Re: 955 Skid Plate Plans
Last post by wyaTT37 - April 24, 2024, 12:32:17 AMMy previous versions were lighter and highly modified from this one. I had these made by a friend in S Korea out of 5005 aluminum. 6MM. However, now I cant seem to find a good mounting solution for a girly with Thunderbike bars. Any suggestions would be appreciated.
This plate was very expensive to build, so I dont have a solution for cost. I just pulled the trigger because of my love for my Tigers.
If any of you would be willing to snap some photos of the underside of your girly so I can strategize...Im currently deployed and dont have access to my steed. Many thanks.
This plate was very expensive to build, so I dont have a solution for cost. I just pulled the trigger because of my love for my Tigers.
If any of you would be willing to snap some photos of the underside of your girly so I can strategize...Im currently deployed and dont have access to my steed. Many thanks.
#8
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by Flyingwombat - April 23, 2024, 10:34:22 AMSpark plugs were black with carbon! Will be cleaning or renewing before carrying on. Although I am not sure that this is the main issue because it was still running with -ve adjustment on the LTFT.
#9
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by Flyingwombat - April 23, 2024, 12:05:52 AMCheers man,
Plugs are NGK probably about 300 miles through them, although I will need to double check as apparently fakes do exist and they were mail order...
I haven't done the valves or clutch, so the only way that the Crankshaft Position Sensor could be off would be some slippage.
The valve clearances are due a service, but I want to get it going again first. Will try some of these lambda sensor fixes and blow the otherway into the IACV.
Plugs are NGK probably about 300 miles through them, although I will need to double check as apparently fakes do exist and they were mail order...
I haven't done the valves or clutch, so the only way that the Crankshaft Position Sensor could be off would be some slippage.
The valve clearances are due a service, but I want to get it going again first. Will try some of these lambda sensor fixes and blow the otherway into the IACV.
#10
Girly Talk (1999 - 2006 Tigers) / Re: Surging at 3-4k RPM
Last post by the slow heart - April 22, 2024, 07:46:19 PMAny chance crank shaft position sensor to be disturbed? It is well exposed during clutch/ valve train works.
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