Suzuki2Strokes.com

Sundial Moto Sports

Suzuki Two-Stroke Message Board
Suzuki2Strokes.com
It is currently Tue Sep 25, 2018 6:03 am

All times are UTC - 6 hours




Post new topic Reply to topic  [ 5 posts ] 
Author Message
PostPosted: Mon Jul 09, 2018 5:36 am 
Offline
Around the block

Joined: Thu Nov 07, 2013 1:59 pm
Posts: 78
Country: United Kingdom
Bikes owned: A100 GT250 & 4t Yams!
After a long lay=-up is there any recommendations for testing the pump. I've got a spark on the GT250 and will be cleaning the carbs out tonight. Fuel tank will be treated with phosporic acid.
Do people stick any oil in the fuel on these occasions say at 30:1?


Top
 Profile  
 
PostPosted: Thu Jul 12, 2018 12:51 pm 
Offline
Still in the Driveway
User avatar

Joined: Wed Jun 20, 2018 8:34 pm
Posts: 9
Location: Vancouver
Country: Canada
Bikes owned: T350 Rebel
I'm going through a similar situation with my T350 and share your concern. Until I've confirmed normal pump operation I've been pre-mixing with synthetic at 50-1 and am using Chevron 94 gas.
One suggestion I got was to change the colour of the 2 stroke oil. The oil that was in there was clear so I added some darker coloured oil, but it's going to take a while to work it's way down through the line, and it's also diluted so not as dark as it could be. Would have been better to drain most of the reservoir first.. The lines to the banjo bolts are clear, so it should be possible to get a visual confirmation at some point.

_________________
- Marc


Top
 Profile  
 
PostPosted: Fri Jul 13, 2018 4:25 am 
Offline
Around the block

Joined: Thu Nov 07, 2013 1:59 pm
Posts: 78
Country: United Kingdom
Bikes owned: A100 GT250 & 4t Yams!
I'm thinking along these lines.. Try a start up with some pre-mix once running (idling) activate the pump lever independently and wait for 'biblical' amounts of blue smoke due to the extra oil delivered. This won't though detect an individual blocked line I guess..

I've heard about a running the pimp from an electric drill (engine off) to see if it delivers too but not sure of details.


Top
 Profile  
 
PostPosted: Fri Jul 13, 2018 10:48 am 
Offline
To the on ramp

Joined: Tue Mar 10, 2015 12:35 pm
Posts: 411
Location: Wales
Country: WALES
Bikes owned: suzuki gt 550j
First thing to note is that these oil pumps are very efficient and rarely go wrong. If you want to check if it's pumping oil just disconnect one of the banjo bolts and see if oil comes out. There is nothing wrong with adding oil to the tank as a safety measure but I would only do it once as it will affect the air/fuel/oil ratio. You can connect the pump to a drill to test output and there is a thread on here how to measure output if necessary.
viewtopic.php?f=2&t=13507&p=169843&hilit=Output#p169843" onclick="window.open(this.href);return false;
http://www.pinkpossum.com/GT750/Oilpump.htm

_________________
98 carb Blackbird and GT550j


Top
 Profile  
 
PostPosted: Fri Jul 13, 2018 2:39 pm 
Offline
On the main road
User avatar

Joined: Mon Jun 12, 2017 12:01 pm
Posts: 172
Location: Galveston County, Tx.
Country: USA
Bikes owned: '75 T500M since '93 Ridden it over 100,000 mi
daxman wrote:
I'm thinking along these lines.. Try a start up with some pre-mix once running (idling) activate the pump lever independently and wait for 'biblical' amounts of blue smoke due to the extra oil delivered. This won't though detect an individual blocked line I guess..
I've heard about a running the pimp from an electric drill (engine off) to see if it delivers too but not sure of details.
I don't know exactly what stage you are at as far as the oil lines go but you might as well purge them with CCI oil and then fill them up again with a syringe or oil squirt gun. Like so.....banjo bolt with the seal washer and a nut.....early serviceable check valve line I dug out and showed here awhile back....
Image

OLD, TIRED WARNING TO MOST OF US BUT FOR ANY OF THOSE THAT MAY NOT HAVE COME ACROSS IT..... don't use compressed air to try and clean/clear these lines. It has to do with a small, somewhat delicate spring and a tiny steel ball that may not play well together under such pressure. :|

Oil not flowing through one check valve as easily as the other while using the syringe or squirt gun? Purge out what is left in the suspect one by blocking off the banjo of the good line using a regular bolt and nut along with the banjo seals and this time flush the line/check valve with kerosene, rubbing alcohol...some type of safe solvent for nylon...polyester...or whatever the lines are made of.........I would not use carb cleaner. It seems to me that may 'attack' the lines and/or any epoxy at joints. The flushing may or may not do the trick but at least the effort was given.


All seems well? Then this next step would be in order to be sure all is well.

Completely wipe the lines and all banjo ends clean and dry. Hang them with the engine check valve ends down over a clean piece of paper or the like for several hours or overnight to see if there is an offensive amount of two-stroke oil leaking by the balls in the check valves.

Try flushing again if need be.

All is well? Then you can just go ahead and hook them up to the pump and engine or if you want to watch them fill up via the engine then you might see if this would work....

Spark plugs out of course to reduce compression. Spin crank via the flywheel nut/bolt.

1/2" electric variable speed drill motor would probably allow best results.......

Image Image

Keep in mind that the CCI oil does not 'flow' through the lines. Between the pump and the 'huff and puff' action of the check valve opening an closing (crankchamber pressure and vacuum at the CCI ports) the oil and any bubbles you may see will be moving in quick, short little spurts. Very tiny bubbles now and then are OK and some would say normal, even while the machine is in normal operation.

In the past(such as after an engine tear down) I have just let the running engine fill the lines. With a working pump the lines fill up very fast with the engine running faster than idle and oil pump lever held wide open. I do however squirt some two-stroke oil directly into the CCI oil ports (cylinders and outboard crank bearings oil ports) with whatever is handy, be it a syringe, squirt gun or rubber bulb beforehand.

_________________
______________
______________________
_______________________________
GONE.......WITH A PUFF OF SMOKE AND A BLUR OF SPOKE


Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 5 posts ] 

All times are UTC - 6 hours


Who is online

Users browsing this forum: cleaf, Google [Bot] and 53 guests


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
cron
Powered by phpBB® Forum Software © phpBB Group
Sundial Moto Sports forum © by Eric F. Kalamaja
Suzuki2Strokes.com