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K100-forum.com » Technical, repair and troubleshooting » Engine and transmission » Fuel Injector Installation

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1Back to top Go down   Fuel Injector Installation Empty Fuel Injector Installation Wed Apr 10, 2024 3:01 am

jjefferies

jjefferies
Life time member
Life time member
I've had the fuel injectors on Blue, my K100 project bike, refurbished and now ready for re-installation. But a question, other than blowing out the area around the fuel injector with compressed air, is there anything else that should be done before shoving the injectors into place? One thought I had Should I lube the o-rings on the injectors and what with? is there anything else that should/could be done?

    

2Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed Apr 10, 2024 6:11 am

Dai

Dai
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Life time member
I usually smear mine with silicon grease. It has the odd property of being as slippy as all hell and then drying out over time (soaking into the rubber I'd guess), thus creating a really good seal. It doesn't glue them in - removal some months later is the normal heave and grunt. Or just pop! if you're really lucky.


__________________________________________________
1983 K100 naked upgraded to K100LT spec after spending time as an RS and an RT
1987 K100RT
Others...
1978 Moto Guzzi 850-T3, 1979 Moto Guzzi 850-T3 California,1993 Moto Guzzi 1100ie California
2020 Royal Enfield Bullet 500
    

3Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed Apr 10, 2024 9:07 am

92KK 84WW Olaf

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I don't think this will upset our admins but a long time back a solution that proved useful in a tool kit for such applications: a tube of KY jelly.


__________________________________________________
1992 K100LT 0193214 Bertha Blue 101,000 miles
1984 K100RT 0022575 Brutus Baja Red 578 bought 36,000 now 89,150 miles
1997 K1100LT 0188024 Wotan Mystic Red 689 58,645 now 106,950 miles Deceased.
1983 K100RS 0011157 Fricka 606 Alaska Blue 29,495 miles Damn K Pox Its a Bat outta Hell Now 58,200 miles. 
1996 K1100LT 0233004 Lohengrin Mystic Red 38,000 miles currently 51,800 miles.
1983 K100RS 0004449 Odette R100 colours 58,000 miles. Sprint fairing now 63,390 miles

Past:
1968 Yamaha 80 YG1
1971 Yamaha 125 YAS-1
1968 Honda 125 SS
1970 Honda CD 175
1973 Honda CB500-4
Honda CX 500
    

4Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed Apr 10, 2024 9:49 am

duck

duck
Life time member
Life time member
I use motor oil. Only makes sense.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

5Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed Apr 10, 2024 10:30 am

Two Wheels Better

Two Wheels Better
Moderator
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92KK 84WW Olaf wrote:I don't think this will upset our admins but a long time back a solution that proved useful in a tool kit for such applications: a tube of KY jelly.
As with most aspects in life, sufficient lubrication is key.


__________________________________________________
"How many cars did we pass today?" "ALL of them."
1977 R75/7-100, '93 K11/K12 Big Block, '93 K1100RS, '95 R100 Mystic, '96 K1100RS, 2 x '98 K1200RS, '06 K1200R & '09 K1300GT
    

6Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed Apr 10, 2024 10:55 am

duck

duck
Life time member
Life time member
Two Wheels Better wrote:
92KK 84WW Olaf wrote:I don't think this will upset our admins but a long time back a solution that proved useful in a tool kit for such applications: a tube of KY jelly.
As with most aspects in life, sufficient lubrication is key.

You only need KY when dealing with the exhaust. affraid


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

7Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed May 01, 2024 4:04 am

Terry in Oz

Terry in Oz
active member
active member
I’ve just installed a new set of injectors into my ‘84 K100RS, I gave the O rings a liberal spray with silicone and they slipped right in. Silicone grease would probably have been better but I didn’t have any.

    

8Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed May 01, 2024 4:20 am

duck

duck
Life time member
Life time member
Terry in Oz wrote:I’ve just installed a new set of injectors into my ‘84 K100RS, I gave the O rings a liberal spray with silicone and they slipped right in. Silicone grease would probably have been better but I didn’t have any.

That's really dangerous. Silicone only has a flash point of around 430C while motor oil is above 500C.

Just kidding.  Even vegetable oil would work as it has a flash point of about 400C and all that you want to do is make the FIs slip in easily when installing. It's not critical lubrication.

Spit would probably work well too.

I use motor oil because it's convenient.


__________________________________________________
Current stable:
86 Custom K100 (standard fairing, K75 Belly pan, Ceramic chromed engine covers, paralever)
K75 Frankenbrick (Paralever, K11 front end, hybrid ABS, K1100RS fairing, radial tires)
86 K75C Turbo w/ paralever
94 K1100RS
93 K1100LT
91 K1
93 K75S (K11 front end)
91 K75S (K1 front end)
14 Yamaha WR250R
98 Taxi Cab K1200RS
14 K1600GT
http://www.ClassicKBikes.com
    

9Back to top Go down   Fuel Injector Installation Empty Re: Fuel Injector Installation Wed May 01, 2024 7:02 am

daveyson

daveyson
Life time member
Life time member
duck wrote:You only need KY when dealing with the exhaust. affraid

Man it's good to have a laugh, in a year's time I'll still remember that, but probably won't remember anything else about today.

I use engine oil too, just a little.


__________________________________________________
11/1985 BMW K100RT (late model)  Vin. 0090567
 ~120,000 km
    

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