Question about 1983 Suzuki Tempter GR 650

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Hi guys, i'm having a problem with my carbs. I had a petcock failure which leaked fuel into the oil. Overpressurized the case and sprayed fuel through the air filter. I changed the petcock, changed the oil and filter, took out the carbs and gave a quick cleaning. The bike would not start. I took off the aftermarket inline fuel filter to ensure flow, as there is olny a small amount of fuel in the tank. The bike will start with the choke all the way on. If I give it gas it bogs down, and it dies as soon as I turn the choke off. I turned the air idle screws 3 turns out per the manual, as these were taken out during the cleaning. Any suggestions would help me out so much. Thanks Steven

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  • Suzuki Master
  • 3,828 Answers

Carburetors Mikuni

you may have to take the carbs off for a really good clean

Hi guys, i'm having a problem with my carbs. I had - 85c5b5f9-1e5b-4b25-ac8c-ac52de9f75c7.jpg

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Posted on Mar 30, 2017

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Posted on Jan 02, 2017

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tellme2
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SOURCE: GSX 600F idle and throttle probs

hi m8,, just a couple things,, wen u stripped the carbs down and cleaned them,, did u take the main jets and cold start jets,ie the jet that the needle in the carb sits in,, and poke the dirt out with a pin,, so u can see threw all the holes wen held to the light, u have a blockage still in the carbs,, undo bottoms of carbs take the main jet and the needle jet out ,,and clean ,, make sure your airbox is sealed down on the carbs and jubilee clips are tight,,,1 at a time pull off the spark plug cap and pull off the cap from its ht wire and snip a little bit off the end so u can see copper or brass stranded wire then screw cap back on ,do that to all 4 caps, do these checks ,the bike will run good, ,, look more in2 the carbs tho ,, its almost certain u have a bloked jet still

Posted on Jan 27, 2009

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SOURCE: carb or manifold or exhaust problem hellllppppppppp

You have an air leak on the intake side of the motor. Get new carb and carb manifold gaskets. Tighten the bolts down evenly in three stages. For the exhaust, try the link below. It is a high temp silicone sealer.

high temp silicone (red)

Posted on Apr 08, 2009

  • 375 Answers

SOURCE: I need tuning specs for my 1982 suzuki gs 750.

You need to fix the fueling first - without fuel it won't run!
Your other problem sounds like an air leak - either the manifold or the carb. Check by spraying WD-40 or CRC at the manifold and carb join while the bike is running - if the revs change (either up or down) you have a leak.

Posted on Jun 29, 2009

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SOURCE: 1994 GSXR 750 wont start

the carbs are proberbly blocked, you might have rust in your tank that will keep blocking, put an inline fuel filter in and get carbs cleaner, you also got a flat battery, give i little revs until it starts then adjust the idle

Posted on Jul 11, 2009

  • 12 Answers

SOURCE: drz 400 sm starts but i cant give it any gas or it dies

Can you slowly increase the revs? It sounds like an accelerator pump or debris in the carb.

Posted on Jul 31, 2009

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Wont start has spark will fire with carb spray was lookn for carb adujustments


If your bike will fire with carb spray, you need a lot more than a simple adjustment. I suspect that you are not getting fuel to the carb. While you have the air filter off, look just inside the mouth of the carb and you'll see a small brass nozzle sticking up. With the engine OFF, twist the throttle grip to wide open throttle position. You should see a stream of fuel squirt into the carb. If not, you don't have any fuel in the carb or the diaphragm in the accelerator pump is bad. Next, pull the fuel line off the carb or the fuel petcock. Crank the engine over and watch the fuel flow from the fuel hose. If it's weak or none, your petcock is bad. In 1996, Harley went to a vacuum operated petcock and they give problems. The diaphragm in the fuel petcock will go bad and you'll have a full tank of fuel but none gets to the carb.

Good luck
Steve

Aug 09, 2011 | 2000 Harley Davidson FXD Dyna Super Glide

1 Answer

Regarding the fuel stopcock of yamaha chappy, it has three settings: on, reserve and PRI, what is the neaning of PRI?, thanks...


You have a vacuum operated petcock....so that when engine starts and draws vacuum...a diaphragm lifts in the petcock to supply fuel to carb. When the engine shuts off...vacuum is lost and the petcock closes.
If you run the tank empty....in order to get fuel into the carb and get the bike started initially....you can open the petcock without engine vacuum by rotating petcock to the PRIME position. Once started return the petcock to the ON position. If you leave it on prime....with engine off...fuel may leak into carb and run into engine and contaminate crankcase oil with fuel.

Mar 22, 2011 | Yamaha YZ 125 Motorcycles

2 Answers

Fuil in air box getting in oil dr200se year 2005 have carb soaking now olny 500 miles cant be worn may be the dry rot o ring in pet **** so far all the diaframs good in pet **** and diafram in top of...


What you are dealing with is a vacuum petcock with a bad vacuum diaphragm , in this case fuel is bypassing the petcock via the vacuum line and filling the engine (oil) with gasoline.
If you have a standard petcock that is leaking (not shutting off properly) or just left in the on position a stuck float needle will also fill your engine (oil) with gasoline. This can happen with a clean carburetor and a good float needle. It just sticks and you have to change your oil. If you have the kind of fuel petcock that allows you to turn it off when not in use , always turn off your gas when not riding.
You will have to change your oil if it is fouled with gasoline. I suspect a vacuum operated petcock is at fault. With standard petcocks I have seen new motorcycles in perfect order stick a float needle ( Kei Hin Carburetors ) and fill there engines and air boxes with gas/oil mix. On vacuum petcocks the diaphragm that shuts off the fuel flow is usually leaking and at fault.

Jan 01, 2011 | 2001 Suzuki DR 200 SE

1 Answer

Gas in oil tank after bike sat for two weeks.


If you have gasoline in the oil tank after sitting for two weeks, you probably have a bad petcock. In 1996, Harley went to a vacuum operated petcock. They are notorious for leaking fuel. Additionally, you have a problem in your carb. Either the needle and seat are not sealing and leaking fuel into the carb or the accelerator pump diaphragm is bad causing the fuel to seep into the engine.

Once the fuel seeps from the carb into the engine, it will get past the valves, and the rings on the piston and into the crankcase. It will sit there until the engine turns over. At that time, the oil scavenger pump will pump it into the tank.

I suggest you replace your petcock with a high quality manually operated petcock such as a Pingle, have your carb gone through by a competant mechanic, and change your engine and primary lubricants.

Good Luck
Steve

Sep 04, 2010 | 2000 Harley Davidson XL 1200 C Sportster...

1 Answer

Hi, my gr650 is pouring oil out somewhere near the rear of the motor, although i can't see where. My air filter is also soaked with fuel. also some oil in the air baox, but that could be spray, oil is...


Hello check your oil level also smell the oil for gas, has the bike been sitting for any long length of time.
Reason i ask this is and older bike and some times the fuel petcock goes bad and and fuel will weep into the crankcase overfilling the crankcase with fuel. plus your having carb problems worn needle seats Etc. carbs need cleaning. you need to check the fuel system from the fuel petcock and carbs.

May 14, 2010 | 1983 Suzuki Tempter GR 650

3 Answers

Petrol in my engine oil chamber why


If you're getting fuel into your oil, your fuel delivery system is leaking. This problem is most common on carburated engines. The needle valve is not seating properly and when the engine is stopped, the carburator is flooding and the fuel is flowing into the engine. Once it gets into intake manifold, it seeps past the valves into the cylinder. Then it seeps past the rings into the crankcase contaminating the oil. If your bike is fuel injected, the same thing is happening because the fuel is pressurized by the fuel pump and your injector(s) are leaking fuel into the engine.

On a carb equipped machine there us usually a petcock to turn the fuel off with. You can either turn the petcock off each time you turn the bike off (a good practice) or you can have the carburator repaired. Some late model bikes have a vacuum operated petcock that automatically turns the fuel off when the engine is stopped. If your bike is equipped with this type of petcock, the petcock could be defective or is positioned in the "prime" position. If you go into the carbs (I think your bike has two carbs), replace the needle and check the float height setting according to the manual in both carbs.

If your bike is fuel injected, these devices are usually not easily servicable, simply replaced if they malfunction. You could try adding a bit of fuel injector cleaner designed for automotive use to your fuel. It may clean the injector (or needle in the case of carburators) and solve the problem. Otherwise, I'd probably take the bike to a repair shop.

Good Luck!

Oct 19, 2009 | Honda VTR 1000 F Firestorm Motorcycles

1 Answer

I have fuel in crank case in 1996 road king .took off cam cap and oil and gas came out. gasket was leaking. also gas and oil coming out of carbruator.


Usually when you find gasoline in your crankcase it's because your carburator is leaking fuel into the cylinder heads. From there it goes into the cylinders on top of the pistons. Down past the rings into the crankcase. If enough gasoline goes in there, it will go past the sprocket shaft seal and into the primary case as well.

This is normally caused by a bit of trash getting under the float valve in the carburator. But, on a 1996 model, there is supposed to be a vacuum operated petcock. The petcock is supposed to close whenever there is no vacuum on it that is supplied from the intake manifold. Either the petcock has been changed, which is not unusual since the petcocks were quite troublesome, or it is not working properly.

First, you need to clean out the carb. and get any trash out from under the float valve. Remove the carb from the engine. Take the float bowl off the bottom of the carb. Pull the pin out that holds the floats and remove them and the float needle valve. Blow compressed air through the fuel inlet fitting to clean any trash out of the fuel valve seat. Inspect the needle valve for damage, replace if necessary. Reassemble and reinstall the carburator. Check for proper operation prior to starting the engine.

With the carb cleaned, you can install either an aftermarket manual petcock (Pingel) or a Harley petcock for a 1994 or prior model. These are manual petcocks. When you're not riding your bike, turn the petcock to the "OFF" position. Also, install a fuel filter in your fuel line between the tank and the carb. Get one of the good ones with the scintered metal filters in it.

Change your oil and filter. Check your primary oil as well. Change it if contaminated with gasoline. Before you reinstall your air filter, connect the fuel line to the carb and turn the gas on. Closely watch the inside of the carb throat to see if fuel starts to "bubble up" into the throat of the carb. This usually takes a few minutes so be patient. If it does, you need to replace the float valve needle with a new one and check the float setting. If it doesn't "bubble up" you're good to go. Then, don't forget to turn your petcock to the "OFF" position when you quit riding the bike.

Oct 05, 2009 | 2000 Harley Davidson FLHR-FLHRI Road king

2 Answers

Air box and crank case fuel flooding problem happened before, thinking it was stuck or worn float needles; I installed 2 Carb float needles left side facing rear of carbs , all larger main jets, all...


Well there only one way the fuel can get into the crankcase and that's from the fuel tank. The petcock must be draining and the float needles are not stopping the fuel flow. Do you have a prime position on the petcock? If so do not run the bike in the position. Try topping the tank off with gas and letting it sit for a while and see is the gas has gone down and then check the crankcase and see if there's fuel in it again. i still say its got to be your petcock.

Sep 29, 2009 | 2005 kawasaki ZRX 1200 R

2 Answers

VT250 Gas leak into the oil.


if i remember rightly,the reserve on the vt bypasses the fuel pump and has flooded the carbs,the other problem you may have is a stuck float which has allowed the fuel to keep coming from the tank,overfilling the carbs,and because of the placement of the carbs between the"v" the fuel would have poured straight into the cylinder,past the piston rings and into the sump,just drain the oil out and replace with fresh oil,check the float levels in the carbs,but apart from that the engine should be fine...hope this helps

Jul 16, 2009 | 1983 Honda VT 250 F

1 Answer

Carbs problem


Remove the fuel line from the carb. Turn the gas on > got flow? If not then clean the fuel line and petcock filter if it has one. Install an in-line fuel filter or replace the present one. Remove the float bowl and clean the entire carb with a spray carb cleaner from the auto parts store. Wear protective goggles to avoid getting spray in your eyes. Spray into all the little airways and fittings in the carb. Use compressed air to assist in cleaning. Is the float needle stuck closed? Be certain the vent tube and vent port are clear.

Please rate this solution. Thanks d_vickers2!

Apr 20, 2009 | 1977 kawasaki Z 650

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