new used vfr, changed oil and cooling liquid: WON'T START

Hello bikers,
just bought a 2003 vtec, in very very good conditions. I drove it for about 500 kms, absolutely no problems.
I decided to drain liquids and put some new oil filter, oil and cooling mix.
I followed exactly the owner's manual procedure.
It started very well, in a easier way I could say, but, done a couple of km it started to cough, and I was unable to run over 4k rpms, the sound of exhaust was "heavier".
I quickly came back home. Temperatrure was 48 C°. Exhaust was very very hot. When stopped, engine temperature raised to 59 C°.
IT NEVER STARTED AGAIN. :crazy: :crazy: :crazy:
I double checked fuses, contacts electric cables.
I drained again oil, unmounted and controlled oil filter, and, since I drained cooling mix from the cap filler tube, letting enterin some air bubbles into the circuit, drained it another time, completely, from the cylinder drain and from the water pump drain, and refilled accurately from the filler cap. Pulled out battery and recharged for 24 hours. When I start, everything is ok, no light on the cockpit, pressure led stays on three seconds then disappears, starter motor works, the fuel pump buzzes very well, it simply doesn't start.
Now, I'm very far from any mechanic point, not to mention Official Honda dealer.....

ANY SUGGESTION?

 

Hey Cook. Sorry to hear about your issues. Can you clarify a few things.

1. When you had it for the first 500km, what was the average operating temperature? And no issues above 4000RPM?

2. You said now it only gets to 48*C. That's not very hot at all. If I'm not mistaken, i think your model VFR has to be somewhere around 63C for the VTEC to even work? (Not entirely sure on that one).

3. Did you check the "dumb" things? Make sure you didn't connection something by accident? Is your kill switch "on".

 

Thank you for helping me.

1. When you had it for the first 500km, what was the average operating temperature? And no issues above 4000RPM?

It was in the range 75 - 85 C°. In town about 102 C°. It worked amazingly over 7000 ( great kick in the ass !!!) until say, 11000.

2. You said now it only gets to 48*C. That's not very hot at all. If I'm not mistaken, i think your model VFR has to be somewhere around 63C for the VTEC to even work? (Not entirely sure on that one).

Yes, you are right ! Owner's manual says that vtec transition needs engine warmer than 65 C°. It was strange to me that low temperature. I made only 4 kilometers, when engine started to rattle, I came back as soon as possible to the garage. So it wasn't in its right temperature, fully warmed....

3. Did you check the "dumb" things? Make sure you didn't connection something by accident? Is your kill switch "on".[/QUOTE]

Yes, I checked. Also changed fuel. Controlled fuses. Controlled switches. I have some ideas: is there any valve into the cooling system which stops engine if there's air or something wrong ? The new oil filter has a "valve" which keeps oil from overfilling, perhaps it could be blocked or have blocked the correct oil flowing ? Final thought: bike has been sleeping from 2009. perhaps debris have clogged the fuel filter? Engine worked like a jewel before, idle was perfect, clutch also, it started in half a second, no matter the altitude or the driving conditions.......

Now I'm just curious to see....

 

Un- bolt the two bolts holding the gas tank at the front and lift the tank. Take you air filter cover off and see if theres a nest ...maybe a kritter made a home in your air filter box.

 

Done. I could spot some bees and flies sleeping in the rows of a BMC air filter, but NO bird's nest. Perhaps I have to wait another little year. 2002 vfr's are known to be old enough to stumble into such a ornithological evenience...

 

Duccman, I tried this. To find out if the gasoline smell indicated something wrong. NOTHING. Everything seems in the right place....so, I have made a call to a mechanical service which in " few days" will come to my garage and take away the cadaveric bike. SIC

 

SOLVED!!
After having double-checked almost everything I could on the bike, I flushed the tank. It had a brownish colloidal crap inside. Not so much, but enough to change the fuel color.
So I re-checked the sparks, which I controlled after buyng, AND.......DA-DUM !! They were completely drown into that honey like ( rust perhaps? ) thing. I left them 24 hours in white petrol,then I took two hours to clean them with alcohol, and very very fine sand paper ( 1200 ). I dried them and refitted in their place.
AT FIRST START !!! WHAT A SATISFACTION GUYS !! A stinking bluish cloud got out the exhaust for about 5 minutes, and then that semitransparent emission I used to know from this lovely bike.....:biggrin:

 

Glad to hear it all worked out, Cook.

 

General rule of thumb: Always have a look at the sparkplugs FIRST anytime there's a running or starting problem. And NEVER use sandpaper on plugs; a wire brush is far better for that.

 

Good job catching that. You know, letting a bike sit is the worst thing you can do to one. They look great on the outside and the inside is all gum and scum.