V7 III Check engine light

[Gregorio]

I resolved my check engine light being on,by disconnecting the injection sensors, blowing them clean with compressed air,squeezing the metal connectors to make a tighter connection and squirting WD40 into the connectors.Hooked back up,no more check engine light! This fix was told to me by Danny Huggins owner of Triumph on Broadway in Hendersonville, NC.

 

[scottmastrocinque]

“injection sensors”

The what?

I am unaware of any component on a Moto Guzzi motorcycle known as an “injection sensor”.

Do you mean the λ (lambda-sensor/s) in the exhaust?

 

[DeadEye]

Or the actual connector for the injectors ?

 

[Gregorio]

Fuel injector sensors.On top of the fuel injector.

 

[scottmastrocinque]

Fuel injector sensors.On top of the fuel injector.

I'm sorry but there is NO fuel injection sensor on top of the injector. There is only the connector for the injector. That comes from the ECU to tell the injector how long to stay open thereby allowing fuel into the intake manifold.

It is most definitely not a sensor. Sorry.

So what you have done is pull the connector, spray WD-40 in it and tighten up the connections within the connector.

However, WD-40 is not suitable for this purpose. WD-40 Specialist Contact Cleaner, is. It cleans and leaves no residue.

WD-40 is HIGHLY FLAMMABLE. They use Butane as the propellant. It burns easily and very hot. In fact, I have used it for years at sea, in starting marine engines. It's the preferred spray to shoot into an open spark plug hole as it remains an oil, that allows you time to screw the plug back in and crank over the engine, plus the oil helps lubricate the piston when starting.

I would not recommend spraying it anywhere where heat is a possibility.

I have watched people spray it near a hot engine and seen it first-hand, spontaneously combust. The oil residue left behind by WD-40 remains flammable, virtually indefinitely.

 

[Mayakovski]

OK, I just learned something. Thanks Scott.

 

[Gregorio]

I was told it was a sensor.I don't actually know.Ok if it's just a connector.What I was told to do and did, worked.

 

[scottmastrocinque]

I was told it was a sensor.I don't actually know.Ok if it's just a connector.What I was told to do and did, worked.

I fully understand.

It is one of the highest goals here to be a compendium of good, solid, information that people can fully trust in.

Although the results you got were positive, it is still very important to get correct terminology and good technique.

That is why I chimed in.

I wish you the best!

 

[Bill Meyer]

De-Oxit has a line of great contact cleaner and anti-corrosion products. An Alfa Romeo wrench tipped me to the line as he had suffered abuse from older Italian electrics for decades.

 

[john zibell]

De-Oxit has a line of great contact cleaner and anti-corrosion products. An Alfa Romeo wrench tipped me to the line as he had suffered abuse from older Italian electrics for decades.

CRC also makes an excellent contact cleaner. It is available and most auto parts stores.

 

[GerryAZ]

CRC is good for immediate fix, but De-Oxit is much better for long-term resolution of connection corrosion (especially small electronic connections). This thread reminds me that I need to order some online. I used to buy it locally at Fry’s Electronics before they closed all of their stores.

 

[Dinsdale Piranha]

However, WD-40 is not suitable for this purpose. WD-40 Specialist Contact Cleaner, is. It cleans and leaves no residue.

WD40, CRC, et al were banned from use on aircraft in t many electricalhe Ozzie air force back in the early '70s.

1. It gums up.
2. It caused corrosion in many electrical connections.

Replaced with Inox. However, the use of a good electrical cleaner is the way to go. You can get contact cleaners with a lubricant, specifically for relays and switches.