• 4 Stroke Husqvarna Motorcycles Made In Italy - About 1989 to 2014
     TE = 4st Enduro & TC = 4st Cross

  • Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

2008 SM450R Wont Start Bad Fuel Pump?

D

D3lla

Husqvarna
C Class
Recently swapped tanks and replaced headlight. Went from IMS 3 gallon to stock.

Noticed one of the plugs on the head light a 2 prong plug, had a wire connecting the two leads (basically shorting it out). I originally took this out, but had to re-install it after realizing the starter would not turn over unless the plug was a circuit. (no idea what this plug does)

While transferring fuel pump to stock tank added 2 extra zip ties to fuel pump and cleaned sock out best as I could. Looked like stock fuel filter. Also ran the fuel pump dry a few times on accident...

Tested the fuel pump (held the line into a gas tank and hit the ignition on switch). Fuel came out, not idea of the pressure... but nothing crazy...just a normal stream..

Bike ran fine before the tank switch. However would flame out if I wacked the throttle hard from dead stop. (not every time) But if I went 0-wot two times in a row the second time would flame out or the third. Maybe due to lack of fuel??

Replaced spark plug.
Put in brand new YUSA battery.
Use 89 ethenol free gas with Torco Fuel accelerator to make it 93-94 octane.
Bike has Power commander 3 arrow exhaust, plugged exhaust etc...

Bike has 4600 miles (*supposedly) and 400hrs (bike has trail tech tach) stock tach says bike has 1300 miles trail tech says 3xxxmiles. My guess is PO left key on at one point while on battery tender and added a shit ton of hours...Or just didn't cover many miles and putted around.


Ordered new fuel pump from amazon

Will this solve my problem?

I'm getting spark, air, compression, and I think fuel (plug smelled like gas) but i don't think the fuel is being atomized when it goes into the chamber due to lack of pressure..
 
Trenchcoat85 said:
No.
Click to expand...

Nice good thing I already ordered one.... It could be the pump just not set right in the holster. I know i moved it. Either way i'm redoing the entire fuel pump assembly.

If that doesn't work im pulling the injector. If it still doesn't work im taking it to a shop. If that doesn't work im going to air drop it on your garage, let you sort it out..
 
If you wanna confirm a fueling problem, use starting fluid. If it tries to catch- it's the problem.

As you suspect, the issue is related to something you did during the tank/pump exchange.

Good luck.
 
D3lla said:
...If that doesn't work im going to air drop it on your garage, let you sort it out..
Click to expand...
Well, apparently you know me.

I thrive on problems until they're solved... or until I'm beating my head against the wall. I'm not always successful; my head is sore. :banghead:
 
So I had the Power Commander III plugged into the positive side of the battery instead of the negative. Leaving nothing to tell the fuel injector to release fuel..... No fuel to injector...

Swapped out fuel pump and filter, old filter was disgustingly bad. Black gas poured out. Pump was on its way out. New pump works great primes quicker and fires up faster.

Also cleaned the injector out.

Bike is running amazing.
 
Good report and good to hear.

The black in your filter is probably just carbon/graphite from your pump brushes- no worries. If it's in the pre-filter I might be a little concerned.

Sounds like your old pump may have been getting near the end of it's life so maybe now was the time to replace it.

Did the starter fluid test help?

How did you figure out you had the PC3 plugged in wrong?
 
Didn't try the starter fluid. But thanks for the tip, extremely valid test.

I think what happened was I put in a new Yusa battery and spaced out. I ended up ripping the whole carb out and cleaning the injector + re-doing fuel pump/filter. That's when i noticed the wires from the injector going straight to the PCIII... Read the manual for PC and noticed it goes to ground not positive. Switched cables and boom, runs perfect. Also noticed shes been running cooler with 94 octane ethanol free gas (mix in 4 ounces of Torco Octane booster to 5 gallon gas can)

I'll get some pictures next weekend when i get back from traveling. I put new all black plastics on. Not sure if I like it yet..

Also rebuilt the front brake pistons. Brake fluid was leaking out. Ordered new seals on ebay and brakes are working great!
 
Do you have any info, pictures, or part numbers for the front Brembo rebuild kit?

This question comes up quite a bit.
 
New all black plastics and integrated led rear turn signals.

Bike runs amazing! Zero issues other than random little things. 4500 miles.

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