The worlds crappest Falco

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fatboy · #1 Post by **fatboy** » Sat Feb 23, 2013 5:27 pm

Belongs to me !
Rode it back from Griffs on a monday,rained tuesday,rode twice wed,rained thurs,wouldnt start friday,sat or sunday.
New plugs allround today,checked all 4 leads and caps, all good
Im now back where I was before it went to Griff
Fuel is not getting to No 1 cylinder, No 2 is flooding cos 1 wont run,plugs bone dry
Injectors been bench tested and cleaned, inj relays replaced ( 1 new 1 s/hand,swapping relays around makes no difference so guess both work,
Fuel pump replaced with s/hand working unit,filter clear as fuel getting to No 2 cyl
plugged test lamp into No 1 injector socket,constant steady pulse
None of this makes sense, any ideas ??

Dalemac · #2 Post by **Dalemac** » Sat Feb 23, 2013 5:52 pm

I presume it is turning over?

#3 Post by **Kwackerz** » Sat Feb 23, 2013 5:53 pm

What eprom are you running, hows the trimpots set..

if you've done everything mechanical, to me it points to electronic.. although that doesn't tie in with the way you report it's demise

fatboy · #4 Post by **fatboy** » Sat Feb 23, 2013 6:09 pm

Yes, it turns over and sometimes fires on No 2, but massive 'spitback' in the TB, blew the lid off ( loose ) airbox.
Not sure what eprom is in there, 1 mashed screw on ECU casing so cant get inside to look,deffo chipped up, loony accereration and no Factory seal on ECU
Also tried substitute Std ECU with factory seal
My thinking now is wiring loom problem but Griff has had the fucker plugged in.
Complete arse,fine one day dead the next

blinkey501 · #5 Post by **blinkey501** » Sat Feb 23, 2013 7:39 pm

fatboy wrote:Yes, it turns over and sometimes fires on No 2, but massive 'spitback' in the TB, blew the lid off ( loose ) airbox.

Ignition timing?

fatboy · #6 Post by **fatboy** » Sat Feb 23, 2013 8:26 pm

Did think timing must be out to cause the backfire,
but were back to the same old thing, fine one day,fekked the next without disturbing any wiring ect.
Will get my mate to test injector relays tomorrow as only 1 was new,ring Mr Jackson on monday.
Bollocks, my head and bank balance both done in so Im sippin a few now

flatlander · #7 Post by **flatlander** » Sat Feb 23, 2013 8:32 pm

if thew screw is mashed on the ecu I get them of wirth fine nosed pliers they are not very tightly wound. If the seal is broken suggests chip may have been changed or something else done so I would check both connector blocks are firmly connected and no loose wires. then check trimpots are set to 12 o clock then look inside

old git · #8 Post by **old git** » Sun Feb 24, 2013 8:17 am

I,m no expert at anything, wife tells me that so she must be right, but if it checks out with griff and rides home, can't be anything mechanical can it??
I mean if timing was out surely it would be out all the time, not intermittent?
Therefore, would sound like programing electrics to me I would look at the magic box under the seat. As you said someone has been in there, could be fooked. Since the whole box is plug n play, and you have come this far, try swapping the whole box out for one know to be ok, got anyone around who will change over with you to see if it will run on the stand?
eBay has a couple £50 & £70

blinkey501 · #9 Post by **blinkey501** » Sun Feb 24, 2013 9:33 am

old git wrote:I,m no expert at anything, wife tells me that so she must be right, but if it checks out with griff and rides home, can't be anything mechanical can it??
I mean if timing was out surely it would be out all the time, not intermittent?
Therefore, would sound like programing electrics to me I would look at the magic box under the seat. As you said someone has been in there, could be fooked. Since the whole box is plug n play, and you have come this far, try swapping the whole box out for one know to be ok, got anyone around who will change over with you to see if it will run on the stand?
eBay has a couple £50 & £70

I have a spare on a lend/return agreement. or purchase for 30 quid

fatboy · #10 Post by **fatboy** » Sun Feb 24, 2013 12:35 pm

Thanks Blinkey,
I did suspect relays as one new, other s/hand from Griff, when I swapped em over to see if it made any differnce I got Diag 1 then Diag 0 on the dash.
Will speak with Griff,see if this is relevant,too bloody cold for buggering about today
I did try another ECU, guarenteed to be working, no different, the chances of 2 ECU's with the same problem are slim but not impossible

D-Rider · #11 Post by **D-Rider** » Sun Feb 24, 2013 11:16 pm

Diag -1, Diag 0 and Diag 1 are used for setting the TPS - almost certainly of no relevance here.

NickyT · #12 Post by **NickyT** » Mon Feb 25, 2013 6:48 pm

Could that rain you had be a factor?

I have never had any starting problems with my Falco, then the other day I jet washed it, after which it wouldn't start for 4 days; it just turned over. Then on day 5 it was fine again and has been fine ever since.

#13 Post by **Kwackerz** » Mon Feb 25, 2013 7:09 pm

NickyT wrote:Could that rain you had be a factor?

I have never had any starting problems with my Falco, then the other day I jet washed it, after which it wouldn't start for 4 days; it just turned over. Then on day 5 it was fine again and has been fine ever since.

That sounds like the sensor in the air intake.

Jet washes are the devil's own powertool

fatboy · #14 Post by **fatboy** » Mon Feb 25, 2013 7:22 pm

Thanks D-R, ignition was on when I switched the relays over so ECU just re configuring. Oops sloppy work there
Bike back to Griff soon

fatboy · #15 Post by **fatboy** » Wed Feb 27, 2013 7:25 pm

The bloody thing is running again

When I was testing things last w/end I did wonder if the injector relays were the problem ( 1 new 1 s/hand ) so I swapped em over and still would not start so I plugged the test lamp into the wiring for the front cylinder,the one not getting fuel, lamp flashed with each injection pulse, still no start so I gave up thinking relays were not the problem.
Sunshine today so have another look,test lamp plugged into rear cyl, the one that flooded, no flash from lamp, swap relays again,problem switched to other cylinder ! aha fecked relay it is !
Fitted old relay ( date 2003 ) RESULT
Conclusion... bloody unfortunate and should have re checked findings and then rechecked,odd that a relay dies being parked up for 2 days,hope this is the last gremlin