General Tech Good at troubleshooting? Have a non specific issue? Discuss general tech topics here.

Gpz 305 Starting issues

Thread Tools
 
Search this Thread
 
  #1  
Old 08-08-2015, 09:22 AM
Reflexman's Avatar
Junior Member
Thread Starter
Join Date: Aug 2015
Location: Wolverhampton UK
Posts: 2
Question Gpz 305 Starting issues

Hi
I've just bought a 94 Gpz305 ( Ok you can stop laughing now)

The previous owner had starting issues and the bike came as a non runner.
I thought I had found the problem when I noticed that the left hand carb was missing a needle jet. Following a trip to the local breakers i returned with a set of carbs to salvage usable parts from.

Needle jet replaced, I eventually get the the thing to fire up (awesome) then it dies. This pattern is repeated over several days recharging battery, cleaning carbs, swapping plugs, leads etc. Then I noticed that the left down pipe is only slightly warm but the right one is blisteringly hot.

I would like to get this thing to work myself as I have an interest in mechanical things so any help would be appreciated.
 
  #2  
Old 08-08-2015, 12:18 PM
marcham's Avatar
Member
1st Gear Member
Join Date: Oct 2014
Posts: 65
Default

How many km on the odometer? What was done to it previously? Compression OK? Valves checked? Have you checked the spark? Fresh fuel in the tank? Carbs cleaned and floats checked?

That was my 1st bike, even before I had a car. Crossed Canada on it too!
 
  #3  
Old 08-08-2015, 03:13 PM
Dragone#19's Avatar
Administrator
1st Gear Member
Join Date: Nov 2005
Location: The Silver State
Posts: 18,288
Default

I wouldn't laugh at a gpz305.

"Cleaning Carbs"- Everyone's definition is different it seems on that one. A fully disassembled and overnight dipped carb is my definition of a carb cleaning. check

New plugs and leads, check

A leak down test would be nice, or the compression test. Valves are easy enough to check as well. Start with all of your basics as listed above by marcham

Good luck and enjoy the project.
 
  #4  
Old 08-16-2015, 06:31 AM
Reflexman's Avatar
Junior Member
Thread Starter
Join Date: Aug 2015
Location: Wolverhampton UK
Posts: 2
Default

Thanks for the tips. I found the float had been tampered with causing the valve to stick. It starts and runs now but wont start again after being warmed up for a while. Guess I've got a lot to re-learn about engines it's been a while since I got my hands on one.
 
  #5  
Old 08-16-2015, 07:06 PM
Dragone#19's Avatar
Administrator
1st Gear Member
Join Date: Nov 2005
Location: The Silver State
Posts: 18,288
Default

"warmed up for awhile" ?

As in enough time for the bowl to empty? Since you mentioned the float issue. I would just rebuild the carb and rule that out of the equation. Verify that you have fuel out of the petcock while you are at it. (The screens tend to get gummed as well.)
 
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
smoothops
Classic Sportbikes
5
06-25-2020 10:54 AM
herr filter
General Tech
0
06-22-2014 08:46 PM
mccrob
New Member Area
9
11-18-2008 04:33 PM
jstonge
Classic Sportbikes
6
07-22-2008 01:30 AM
turace24
General Tech
0
05-12-2008 04:10 PM



Quick Reply: Gpz 305 Starting issues



All times are GMT. The time now is 12:55 AM.