Question about 1986 Suzuki GS 700 ES

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Will not idle until engine reaches opperating temp. will idle cold if I adjust the idle screw up but when it reaches opperating temp it will idle crazy high.

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The idler jet in your carby needs cleaning/replacing, very common in motorbikes.

Posted on Mar 17, 2011

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Posted on Jan 02, 2017

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How to adjust a carburetor on a chainsaw


Depressing the throttle slightly we listen to the engine. If the engine hesitates to accelerate, the LO screw should be opened 1/8 of a turn. If we open the screw too much, the engine will not accelerate smoothly and start shaking (too rich of a mixture). In this case we should close the LO screw slightly. We repeat this procedure until the engine reacts smoothly when adding power. Meanwhile, a readjustment of the idle speed may be needed.

After the LO mixture has been adjusted, we proceed with the HI screw adjustment. After securing the paramotor, we open the throttle to full power. We turn the HI screw to the left or right until the maximum RPM is reached. From this position just a slight turn to the right should cause a significant RPM drop. This means the lean side of the mixture has been achieved. Immediately we OPEN the screw to the left to prevent the engine from overheating!


Let us repeat once again this critical step:


At full power we tune for maximum RPM, then we close the HI screw more, until a drop in RPMs is noticed. When the drop in RPMs occurs we open the HI screw again until we reach maximum RPMs once again, and then we open the screw more until we have a drop of 20 to 60 RPMs. In this position the carburetor will be perfectly tuned slightly on the rich (safe) side.


Next, we should close the throttle and recheck the idle and the LO screw adjustment. If the carburetor was tuned properly, the idle will return to the normal setting described above.

To put it in a nutshell, if the engine idles and accelerates smoothly, does not smoke heavily and achieves 20- 60 RPM below maximum RPM, the carburetor is tuned correctly.

Dec 07, 2015 | Garden

1 Answer

Model 3200. How should 3 adjustment screws be set(T,low and high for carb)?


Depressing the throttle slightly we listen to the engine. If the engine hesitates to accelerate, the LO screw should be opened 1/8 of a turn. If we open the screw too much, the engine will not accelerate smoothly and start shaking (too rich of a mixture). In this case we should close the LO screw slightly. We repeat this procedure until the engine reacts smoothly when adding power. Meanwhile, a readjustment of the idle speed may be needed.

After the LO mixture has been adjusted, we proceed with the HI screw adjustment. After securing the paramotor, we open the throttle to full power. We turn the HI screw to the left or right until the maximum RPM is reached. From this position just a slight turn to the right should cause a significant RPM drop. This means the lean side of the mixture has been achieved. Immediately we OPEN the screw to the left to prevent the engine from overheating!


Let us repeat once again this critical step:


At full power we tune for maximum RPM, then we close the HI screw more, until a drop in RPMs is noticed. When the drop in RPMs occurs we open the HI screw again until we reach maximum RPMs once again, and then we open the screw more until we have a drop of 20 to 60 RPMs. In this position the carburetor will be perfectly tuned slightly on the rich (safe) side.


Next, we should close the throttle and recheck the idle and the LO screw adjustment. If the carburetor was tuned properly, the idle will return to the normal setting described above.

To put it in a nutshell, if the engine idles and accelerates smoothly, does not smoke heavily and achieves 20- 60 RPM below maximum RPM, the carburetor is tuned correctly.

Nov 22, 2015 | McCulloch Garden

1 Answer

Why are so many trouble diagnostic codes being thrown


sounds like you speed sensor and your throttle poistion sensor

Sep 02, 2014 | Cars & Trucks

1 Answer

HAVE A 1999 SPORTSTER 1200C PULL MY CLUTCH LEVER IN AT IDLE TO SHIFT TO FIRST GEAR AND HEAR IT CLUNK IS THIS NORMAL?


Well, the answer is yes and no. If you hear a clunk noise when shifting to first gear when the engine and transmission is cold, this is normal. Once the engine reaches normal operating temp, the answer is "NO", not normal.

In a cold engine, the oil is thick and even with the clutch pulled in, enough oil is between the plates to drive the mainshaft and cause the noise. Now. once the oil gets hot, it shouldn't do this. If it does, you need to adjust the clutch.

To adjust the clutch, find the cable adjuster in the middle of the clutch cable. Loosen the locknut and turn the adjuster inwards to get as much slack in the cable as possible.

Now, remove the derby cover, spring, and locknut at the clutch release mechanism on the outer primary cover. Inside the mechanism is a screw. Turn this screw as far as it will go clockwise but don't try to force it. Once it stops, turn the screw back clockwise 1/4 turn. Replace the "locknut", spring, and the derby cover over the release mechanism.

Now, go back to the cable adjuster and adjust it back outwards until you get about an 1/8" of freeplay. Squeeze the clutch a few times and check the freeplay again. Lock the lock nut and replace the rubber boot over the adjuster.

Good Luck
Steve

Jan 13, 2011 | 2000 Harley Davidson XL 1200 C Sportster...

3 Answers

I have a 2003 chevy impala. just changed the thermastat because the temperature was fluxuating. Since changing the thermastat the temperature gage constantly read in the red, however the coolant level...


You probably need to bleed the cooling system properly.

Open the cooling system bleeder screws.

Slowly fill the cooling system with a 50/50 coolant mixture until coolant runs freely out of bleeder screws.
Close the cooling system bleeder screws
Install the coolant pressure cap
Start the engine.
Run the engine at 2,000 - 2,500 RPM until the engine reaches normal operating temperature. (midway on gauge)
Allow the engine to idle for 3 minutes.
Shut the engine off.
Allow the engine to completely cool.
Top off the coolant as necessary.
Run engine again at 2000 - 2500 RPM until the engine reaches normal operating temperature.
Allow engine to idle until cooling fans come on. It should come on with the gauge about 3/4 of the way to red. - if it gets to where is touches the red, shut down immediately.
When the fan comes on, put your hand behind the fan and observe the temperature of the air coming from the fan. It should feel hot. If it is blowing cold air, the coolant is not circulating through the radiator like it should. This could be caused by lots of things including an improper/defective thermostat, corroded water pump impeller, or a blown head gasket.

Dec 02, 2010 | 2003 Chevrolet Impala

1 Answer

Hello I have a 1980 Ford Bronco 351 2bbl. Wondering if anyone knows which screws adjust what? Please if anyone has any ideas please respond. Thank you.


Here are some images that might help to assist you, and let me know if you require any further assistance.


Adjust the curb idle with the engine warmed up and the choke off.

421d8f7.jpg


The air/fuel mixture screws should be adjusted with the engine warmed up and at normal idle speed, then turn each air/fuel mixture screw in one at a time until the engine just begins to mis-fire, then back the air/fuel mixture screw out 1-1/2 to 2 turns out a half a turn at a time until the engine idle is the smoothest. (your vehicle might have restrictor caps over the air/fuel mixture screws to limit the amount of adjustment)

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The choke adjustments;

e992a23.jpg

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To adjust the vacuum tension pull on the choke pull-off:

71de89e.jpg



Adjust the fast idle screw to the proper RPM with the engine cold and the choke on.

cadcd19.jpg

Jul 31, 2010 | 1981 Ford Bronco

1 Answer

Need to know how to adjust a carb on the 2.5L. I'm having a problem with too much gas getting into the chambers and drenching my spark plugs. I can also smell a lot of gas coming out of the exhaust. I...


the air fuel adjustment has little to do with what u have going on, but here is what u do, make sure the engine is at normal operating temp temperature (at least 185F) then verify idle speed is set to spec +or- 50 RPM, then turn the carb mixture adjusment screw in until the idle speed starts to drop off, then turn it back out until the idle speed increases to its highest point (u will need a hand held tachometer), when u have reached the highest idle turn the idle screw back in 1/4 trun, that is lean best idle.

Mar 19, 2010 | 1985 GMC S-15

1 Answer

CLEAND CARB NEED TO KNOW HOW TO ADJUST CARB


Most carbs have the adjustment removed (EPA) but if yours still has the adjusting screws here are the seat of the pants methods:

One Screw Carb: Turn it all the way in and then back out 3-1/2 turns, start the engine and make slight turns in or out until the motor runs smooth from idle to wide open, do not get it too lean, turn in until max RPM is reached then turn out 1/8 turn and go from there.

Two Screw Carb: You adjust the one to remedy either the low or high, high is adjusted until the motor runs smoothly under load at high RPM and the low is adjusted until idle and off idle is smooth.

Feb 27, 2010 | Troy Bilt Tb70ss Gas Trimmer

2 Answers

I have a older model # 30 jiffy ice auger and i can not seem to keep it running consistanly. I was wandering what the carburator adjustments are. The low idle screw and the high idle screw where do I start...


Hello Randy. I can talk you through making adjustments to your Jiffy ice auger engine.
1. Read through the whole list before you start adjusting.
2. Close both jets GENTLY
3. Open the Low speed 1/4 turn
4. Open high speed jet 1 1/4 turn
5. Start engine.
6. Adjust low speed until idling smoothly.
7. Open her up wide open.
8. Adjust High speed until engine transitions smoothly from idle to high speed without bogging.
9. Shut engine off. Let it cool.
10. Once engine is cold. Fire it up and let it idle for 30 secs. Open it up wide open again. Adjust if necassary.

NOTE 1: The trick with the Jiffy's is to tune them during cold (ice fishing) weather.
NOTE 2: Low speed screw,the one on the left.
NOTE 3: High speed on the right.

Good luck ice fishing! Regards, Joe

Dec 31, 2009 | Sport & Outdoor - Others

1 Answer

Engine revving on my V-strom 1000


when the bike is at normal running temp, set your idle at approx 900rpm. then rev it up and see if it returns to an idle. note: i had a suzuki that did the same thing. very cold blooded engine. when cold, had to use choke until it warmed up enough to idle. Idle should be adjusted at normal running temp.

Jun 07, 2009 | 2008 Suzuki DL 1000 V-Strom GT

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