guzziriders.org - moto guzzi forum Homepage
Forum Home Forum Home > Technical > Big Block Tonti
  New Posts New Posts RSS Feed - T5 mystery starting
  FAQ FAQ  Forum Search   Events   Register Register  Login Login

T5 mystery starting

 Post Reply Post Reply
Author
Message
Jim Mac View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 14 May 2014
Location: Edinburgh
Status: Offline
Points: 2270
Post Options Post Options   Thanks (0) Thanks(0)   Quote Jim Mac Quote  Post ReplyReply Direct Link To This Post Topic: T5 mystery starting
    Posted: 19 Jun 2014 at 14:26
My T5 has always been a pig to start - so was my Convert.  basically you couldn't put the choke on and twist the throttle to start, no way.  you had to twist the grip two, three or four times and hold it and press the button maybe once or twice to start, bit of a pain but it started.
 
whilst blankly staring at it the other day thought "why don't I just flip the choke and push the button, no wiggling throttle" - I did and it started first time.
 
tried it on a number of occasion and it starts first time, but if you even look at the throttle it cuts out.
 
Now isn't that just a Guzzi for you !


Edited by Jim Mac - 19 Jun 2014 at 14:26
Norge 1200 GT 8v   T5 Polizia
Too old to die young
Back to Top
Ken-Guzzibear View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 13 May 2014
Location: Sileby Leics
Status: Offline
Points: 4857
Post Options Post Options   Thanks (0) Thanks(0)   Quote Ken-Guzzibear Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jun 2014 at 21:49
I found it does depend on the settings and the type of carbs with thePHF's 2 twists then press the starter flip the choke on then off when it fires job done with the square carbs NO throttle fire it flip on the chokes Summer) and it fres in Winter a whiff of throttle and a bit on the cold start it is not a choke as such more a cold start device. The round engine needed cold start every time unless the engine IS hot  the square one hardly ever needed the cold start other than flick on off.
The Older i Get, The Better I Was
Back to Top
Brian UK View Drop Down
Moderator Group
Moderator Group
Avatar

Joined: 13 May 2014
Location: Surrey
Status: Offline
Points: 7943
Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian UK Quote  Post ReplyReply Direct Link To This Post Posted: 19 Jun 2014 at 23:21
If you have pumper carbs, then twisting the throttle can put a huge amount of fuel in.
Brian.

Better 5 minutes late in this world than years early in the next.
Back to Top
Mike H View Drop Down
Senior Member
Senior Member
Avatar

Joined: 21 May 2014
Location: East Anglia
Status: Offline
Points: 5264
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2014 at 15:26
The 'chokes' starter jets include atomizer tubes, there's an air passage from an external hole up near the 'choke' plunger area (in addition to two lower holes, one on each side, which are the float chamber air vents), so that this air should be mixed with the fuel that is drawn up the starter jet from an enclosed corner of the float chamber. Two probs with this, 1. this corner and the jet can get clogged with deposits; 2. the tiny atomizer holes in the jets can get blocked, if that happens then using the choke only results in neat petrol getting sucked up so then it's too rich and won't start.
  
HTH
   
PS (edit): it goes without saying the external vent holes mustn't be bunged up either. Big smile
 


Edited by Mike H - 20 Jun 2014 at 15:27
"Chicken nuggets don't dance on a Tuesday."
Back to Top
Mike H View Drop Down
Senior Member
Senior Member
Avatar

Joined: 21 May 2014
Location: East Anglia
Status: Offline
Points: 5264
Post Options Post Options   Thanks (0) Thanks(0)   Quote Mike H Quote  Post ReplyReply Direct Link To This Post Posted: 20 Jun 2014 at 15:39
PPS: I believe that the correct method is indeed choke only, leave throttle alone, cold starting only, choke not needed if warm.
  
If cold starting choke only not working, summinks wrong wiv it, IME modern fuel deposits bunging something up somewhere. OR damaged O-rings or worn choke piston seals, air leaks, OR just simply badly adjusted / set-up, etcetera...
   
Did I tell you the story that despite my CD175 refusing to go faster than 60 mph and the combustion chambers always being choked with thick soot (I decoked them once and got 70 mph, but soon to drop to 60 once they coked up again), all because I believed that the carburettor should have been correctly set up at the factory and therefore the adjustments must never be disturbed. Doh ..
 
 
 
 
"Chicken nuggets don't dance on a Tuesday."
Back to Top
 Post Reply Post Reply
  Share Topic   

Forum Jump Forum Permissions View Drop Down

Forum Software by Web Wiz Forums® version 12.00
Copyright ©2001-2018 Web Wiz Ltd.

This page was generated in 0.094 seconds.