Hello guys, today i inspected my spark plugs and i saw that electrod spark plugs have white color. This means that my mixture is poor?
I have 900RR headers and Tyga perfomance exhaust with oem air filter.
I am very concerned and i need help.
Is that too lean? It looks to be what I thought was normal wear.
"A motorcycle is not just a two-wheeled car; the difference between driving a car and climbing onto a motorcycle is the difference between watching TV and actually living your life."
-2005 CBR 600 F4i
-2001 RC51 ** SOLD
-2002 VFR 800**SOLD
-2002 919 **SOLD
-2006 599 ** WRECKED
Looks fine. Fuel injected motorcycles do not yield the same plug characteristics as conventional carbs do. For example you simply cannot do a plug chop in a fuel injected 4 stroke engine and expect to get accurate results like in the old days. Inspecting the plugs of a modern Fi motorcycle engine will only alert you to a problem of extreme nature.
Hello again, I did a post about spark plugs, thinking that the problem is in them.
The problem is this, after warm up, the bike starts to move badly, appeared in the muffler claps, when closing the throttle in high speed sound like pur-pur-pur. But on a cold engine is no such problem. The FPR replaced 6000 km ago.
Also installed PAIR plates.
It is written in the description of the synchronization procedure in this forum
-remove vacuum hoses from throttle bodys 1 and 4
-remove the vacuum lines closest to center line of bike on 2 and 3 (the outer vacuum lines on 2 and 3 are tied to the fuel pressure regulator and should not be removed)
In the service manual on the picture shows that the FPR hoses route another
And I found on ebay two pics, 1st is 02' 919 and 2nd is 07
Today I checked the heating pipes, 2 and 3 as hot as 1, but is colder.
And I began to search problem.
Started the engine and disconnected a plug cap on 4th cyl. nothing happened.
I swapped plug wires with cap 1 and 4 cylinder - no changes
I swapped ignition coils 2/3 and 1/4 - no changes
I replaced spark plug - no changes
I think that the problem in fuel injector 4 cyl.
What do you think?