Unusual No Start Problem

[Kiwi_Roy]

MY Brother in New Zealand  has a V7III that refuses to fire
This bike has less than 400 Km on the Oddo, it looks like new, it got a few days use then was parked with a full tank of gas and never turned over
The bike has only run for a few days, parked and never even turned over
Also in his shed is the V9 that we share the ownership of, it used to belong to my younger brother who passed away about 2 years ago it has been sitting since I parked it back in March, although it last got a run when my Nephew was over in October, hasn't even been cranked since, my brother suspects that won't go start as well but he hasn't tried it yet
My brother spoke to the shop where he bought the V7 III, they hinted it might be varnish in the fuel injectors
Has anyone here had a similar experience with a long parked, Not Run Guzzi
Any thoughts on getting these stuck injectors mobile again Remember they are not your garage queens that get the odd exercise.

[fotoguzzi]

Maybe try swapping relays around before spending $ to clean the injectors. Or I bet you tried that already.

[Kiwi_Roy]

Ok, just spoke to my Brother again
Last time his son was over they took the V9 out for a burn, it started up and ran really rough for a while then slowly came right as the fuel had some circulation time.
Most of you and I never have this problem because our bikes get a regular run, these bikes never run, just left for months with gas sitting in the injectors
The pump never turns on Nada
My Bro is going to try and get a ring mechanic to pull the injectors, the only option he has is to courier the bikes back to the dealer in Wellington.
He needs to come up with a better storage procedure.

[Dirk_S]

Roy, have you ever ever taken a stab at cleaning injectors? Not hard—I popped mine off, and ran some cleaner through them using some fuel line from the can into the port, and connected a 9-volt to it via alligator clips, allowing me to squirt with speedy intermittence to clean out the gunk.

[antmanbee]

You can test the injectors with Guzzidiag. Pull the injectors but keep them connected and then do a test spray to see if they give a nice misty puff and that looks the same for both sides.

[guzzisteve]

Could it be the fuel quality? Lots of crap fuel all over the world.

Did you see if it still burns or lites on fire?

[moto-uno]

 Although it's not a cure all , Sea Foam , or similar fuel preservative added to the tank before the last
ride of the year , usually is good for a year at keeping the fuel and injectors clean enough to run well.
Can't attest to anything longer than that . Peter

[Kiwi_Roy]

Although it's not a cure all , Sea Foam , or similar fuel preservative added to the tank before the last
ride of the year , usually is good for a year at keeping the fuel and injectors clean enough to run well.
Can't attest to anything longer than that . Peter

If it was bad fuel it wouldn't;t come right by itself.

[Vagrant]

Sea foam is not a stabilizer. It has alcohol in it.
My bikes stored in Az for 9 months get a double dose of marine Stabil and Startron along with fresh premium fuel. I run them for 10 minutes or so with that blend first. When I get there I use a quart bottle with the tapered cut off nipple to start suction through a fuel line to drain the old gas out. Beats a mouth full of gas! I then refill with fresh premium and then start them up. This has worked fine for 10 years so far. I hope I'm not sorry I said this when I get there in two weeks.
If they run a bit rough use seafoam for a tank or two. 

[pressureangle]

Here in South Florida, anything with ethanol mix gas in it can be certain to fail to start after 6 months. With rec90 non-ethanol, you can bet 50/50 that it will run after 6 months. The biggest problem however, is our humidity- and this shows up frequently because 'stored outboards'- water collects in the low points of the fuel system, mixes with the ethanol and turns into a soft epoxy sludge that won't dissolve with any off-the-shelf fuel system cleaners (I did discover through frustration and desperation that straight acetone in a 2:1 mix with 2 year old crapgas dissolves the wax and runs in a '53 John Deere AO) Water collected sufficiently in my '97 Sport-i injector caps to leave significant hard deposits, and twice has made hard starting/rough running/stalling which was impossible to diagnose but through disassembling the fuel system. (fuel filter change is a yearly/10k maintenance at minimum)
I'd pull the tank return and pump out a couple cupfuls into a clean container to check for any contamination.

[moto-uno]

  Strange , but if one goes to the Seafoam website , it specifically states it can stabilize fuel for almost 2 years , but hey ,
what do they know ?  Peter

[fotoguzzi]

First, Sea Foam Motor Treatment does have a small amount of isopropyl alcohol. Here’s a note about isopropyl from one of our blog posts about choosing the best Sea Foam treatment for your engine:

Isopropyl alcohol (derived from petroleum) is very well-known for its ability to effectively solubilize water in fuel. Additionally, isopropyl is an excellent fuel residue cleaner. Unlike ethyl alcohol (derived from grain), isopropyl is not corrosive and does not have the same ability to draw moisture from the atmosphere. While there’s often confusion about the different types of alcohol and how they work in a fuel additive, isopropyl is a safe and effective petroleum-based ingredient. In any case, some Sea Foam products include a small amount of isopropyl and some do not.
As you noticed, Marine PRO does not have any alcohol to meet some marine manufacturer requirements. Whatever position you take on alcohol in fuel additives, Sea Foam Motor Treatment has always been a safe and effective additive to use in marine engines like your 2-stroke

[pressureangle]

It's important to know about alcohols and gas, that isopropyl alcohol will absorb water in gas but *it will not dissolve* the ethanol/water/hydrocarbon gunk that forms in your fuel system once it's there. Isopropyl alcohol added to ethanol gas is only effective *before* the ethanol combines with water.

[Alfetta]

If it was bad fuel it wouldn't;t come right by itself.

in your first post, you state that the bike was parked with a full tank..   So if the fuel is bad, you have several gallons of "bad" to burn through.

I have noticed that fuel is changing, and keeping it for long periods of time is more of a problem than it has been in years past. I recently had to "un-glue" my PW80 throttle slide after a couple of non-use months...  I was shocked, I'm a big guy, but i could not turn the little PW80 grip !

[injundave]

Fuel in New Zealand is crap. If left for more than three months it starts to go off and smells putrid when really rotten. Empty the tank and run until all the fuel is used up.

[Stratodisaster]

Rather than draining and trying fresh gas and maybe some fuel treatment I would try something much more complicated and expensive first.  Just kidding. We were taught start it in with cheap and simple and go from there. Good luck

[Dirk_S]

How effective are those fuel injection cleaner additive bottles? That you can get most everywhere?

[guzzisteve]

If the fuel doesn't burn I have no idea if anything brings it back. Magic octane booster?