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Mikuni carburetor diagrams

Connection of vacuum hoses and egr valve hoses on CF Moto /cf500 atv

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

  • 35 Answers

SOURCE: pcv bypass and carburetor hook up

As far as the breather to the top of the engine goes, just pull off the hose and replace it with a small breather filter and you are good to go. Sorry, but can't help with your vaccum diagram.

Posted on Sep 18, 2009

  • 101 Answers

SOURCE: Fuel line issues on Yamaha Timber Wolf ATV

That was an atmospheric vent you found that should not have gas in it. If it does, the carb has over flowed. It probably needs to be cleaned with special attention paid to the needle valve and float assemblies.It is routed up high to prevent water and debris from entering it and clogging it up. It should have holes for it to pass through on the snorkel coming out of the air box behind the gas tank under the seat.

Posted on Oct 05, 2009

  • 13 Answers

SOURCE: 2008 qlink 2500cc cf-moto enginescooter non

all carbs are adjustable,float levels can be changed,jets if you can buy new can be drilled out using a hobbiest drill set(approx $14)you can also shim the needle...make sure your carb is clean and you don`t have any air leaks.

Posted on Mar 15, 2010

  • 901 Answers

SOURCE: I need to look at

check mikuni web site. or try google search

Posted on Apr 05, 2010

19ken55
  • 426 Answers

SOURCE: Can you please help? I

If the bike is not fuel injected then why does it have a throttle positioning sensor? It may run but not correctly.

Posted on Feb 01, 2011

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1 Answer

I have a yamaha moto 4 atv 1985 it wont fire cant get it will turn over but wont run or fire


Hi, Tina and the usual suspects are:
1. Fuel tank empty.
2. Fuel supply valve/petcock turned off.
3. Fouled spark plugs.
4. Engine flooded as a result of overuse of the enricher.
5. Vacuum hose to the fuel supply valve/petcock disconnected, broken, cracked, or pinched.
6. Fuel valve/petcock or filter clogged.
7. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
8. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and module.
9. Spark plug cables in bad condition and shorting, cable connections loose, or connected to the wrong cylinders.
10. Ignition timing incorrect due to a faulty ignition coil, ignition module or sensors (MAP, CMP, CKP, O2 and/or BAS).
11. Security alarm needs a reset.
For more information about your issue and free downloads that you will need please visit the websites below. Good luck and have a nice day.ATV Connection
86 Moto 4 No spark Unsure of where to post lol Yamaha Grizzly ATV Forum
https://www.tradebit.com/filesharing.php/search/0/1985+yamaha+yfm200
Yamaha Yfm200n Moto 4 1985 parts lists
http://www.yamahamotorsports.com/assets/service/manuals/2006/LIT-11626-19-08_1141.pdf

Jan 08, 2016 | Yamaha Motorcycles

1 Answer

I need the vacuum diagram for 1986 ford truck with a300 6cil


Short of a Haynes or Chilton repair manual for pickups covering your year's truck, I don't know if you could find a vacuum diagram easily on the internet. However a google search might give you a strand of hope. That was about the year that ford (and all of them to be sure, to some extent or another) went crazy with vacuum controlled emissions and operations. As soon as they grudgingly accepted fuel injection over carburetors as the reality, all those crazy vacuum diagrams disappeared. They met emission regulations through better computer management operations. Sigh, I'm still reliving the nightmare of electronically controlled carburetors (feedback carburetors, as your ford is called-works real good when it is working good) via my 1987 sentra with two solenoids in the carburetor for fuel-air mixture control- now I'm looking for a replacement carburetor. You would not believe the virtual array of vacuum lines on my sentra. They even included a long stack of metal tubes across the top of the engine, lol.

Anyway, by now that truck is so old, what do you need beyond the brake booster hose, the vacuum advance to the distributor, if you have a MAP sensor equipped, that is a straight manifold tap, and then a tap for the egr valve, maybe controlled by a thermal switching valve-you know, when the coolant is hot, the valve switches air, or vacuum really, to the egr valve. Your charcoal canister would have, I think, a manifold vacuum hose. I might be missing a few, but you might be able to struggle through it. If you have a working smog pump, maybe called an air pump, you will really need a vacuum diagram. There should be several older ford truck enthusiasts forums that you could join. Somebody would surely have it.

Mar 06, 2015 | Ford Cars & Trucks

1 Answer

What is a egr valve


  1. Install a tachometer on the engine, following the manufacturer's instructions.
  2. Detach the engine wiring harness connector from the Idle Air Control (IAC) solenoid.
  3. Disconnect and plug the vacuum supply hose from the EGR valve.
  4. Start the engine, then apply the parking brake, block the rear wheels and position the transmission in Neutral.
  5. Observe and note the idle speed.
If the engine will not idle with the IAC solenoid disconnected, provide an air bypass to the engine by slightly opening the throttle plate or by creating an intake vacuum leak. Do not allow the idle speed to exceed typical idle rpm.
Using a hand-held vacuum pump, slowly apply 5-10 in. Hg (17-34 kPa) of vacuum to the EGR valve nipple.
  1. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.
  2. If the idle speed does not drop more than 100 rpm with the vacuum applied and return to normal after the vacuum is removed, inspect the EGR valve for a blockage; clean it if a blockage is found. Replace the EGR valve if no blockage is found, or if cleaning the valve does not remedy the malfunction.


EGR Valve Removal & Install
3.0L OHV (2 valve) and 3.4L SHO engines

b9175c5.jpg

Fig. : EGR mounting-3.0L OHV (2 valve) engine

5fcd84e.jpg

Fig. : EGR mounting-3.4L (SHO) engine

4552fc2.jpg

Fig. : Remove the two retaining bolts and...

b849310.jpg

Fig.: ... remove the valve from the intake manifold

795549d.jpg

Fig.: Thoroughly clean the mating surfaces of the manifold and the EGR valve (if being reused)
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Using a 22mm wrench or crowfoot, disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 26-47 ft. lbs. (35-65 Nm).
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

3.0L OHC (4 valve)

d8a563e.jpg

Fig. : EGR mounting-3.0L OHC (4 valve) engine
  1. Disconnect the negative battery cable.
  2. Remove the vacuum hose from the EGR valve.
  3. Remove the two EGR tube-to-EGR valve retaining nuts.
  4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
  5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
To install:
  1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
  2. Connect the EGR valve-to-EGR tube, then tighten the retaining nuts.
  3. Connect the vacuum hose to the EGR valve.
  4. Connect the negative battery cable.

Tell us news.

Oct 12, 2012 | 1998 Nissan Maxima

1 Answer

On my 2000 Golf 1.9 tdi ALL vacuum hoses are disconnected. How do i connect the hoses between the turo boost control valve and the egr solenoid valve as well as the main vacuum hose from the vacuum pump. I...


You will need a Vacuum hose diagram to hook thes up correctly. There should be a diagram on the hood or raiator cover of the vehicle. If the diagram is missing you will have to take ALL info from your car (Year,Make, Model, Engine size, Engine code) and obtain the diagram from a dealer.

Jul 28, 2011 | Volkswagen Golf Cars & Trucks

2 Answers

Where do I adjust the rpm on my 1991 dodge caravan?


you can not manualy set the rpm on your dodge caravan, it is set by your computer and your idle air control valve, if you are having problems with your idle being to high or low you may need to replace your idle air control valve, go to your local auto zone or auto parts store and get a new one, they are pretty easy to replace,just a couple of screws and a electric connection plug, the auto store should be able to give you the location of the part on your vehicle of where it is located.

Jul 01, 2011 | 1991 Dodge Caravan

1 Answer

Replace egr valve on 3.5 litre 215ci v6 how to?


  • Disconnect the car battery. Locate the EGR valve. You may need to refer to the owner's manual.
  • 2 Unhook the air supply hose, vacuum hose and all electrical connections. You may need the screwdriver for this.
  • 3 Remove the EGR mounting bolts with the socket wrench.
  • 4 Unbolt the EGR valve from the EGR tube with the wrench. Use a wide-mouthed wrench, which works best for this.
  • 5 Look at the EGR valve. If there are holes in the valve, it definitely needs to be replaced. If there are no holes, you may opt to clean it by spraying a half can of carburetor cleaner into the valve. Let it sit, then use a gasket scraper, putty knife, small drill bit or long wood screw to scrape out the buildup in the valve.
  • 6 Install a new gasket and EGR valve if a total replacement is due. Attach all hoses, wiring and bolts that were previously removed.
  • 7 Reconnect the battery and test drive the car.


  • if this helps you please give a good thumbs up rateing thanks have good day

    Dec 28, 2010 | 2005 Chrysler 300

    3 Answers

    EGR Valve not working


    EGR Valve Testing
    1. Install a tachometer on the engine, following the manufacturer's instructions.
    2. Detach the engine wiring harness connector from the Idle Air Control (IAC) solenoid.
    3. Disconnect and plug the vacuum supply hose from the EGR valve.
    4. Start the engine, then apply the parking brake, block the rear wheels and position the transmission in Neutral.
    5. Observe and note the idle speed.
    If the engine will not idle with the IAC solenoid disconnected, provide an air bypass to the engine by slightly opening the throttle plate or by creating an intake vacuum leak. Do not allow the idle speed to exceed typical idle rpm.
    Using a hand-held vacuum pump, slowly apply 5-10 in. Hg (17-34 kPa) of vacuum to the EGR valve nipple.
    1. If the idle speed drops more than 100 rpm with the vacuum applied and returns to normal after the vacuum is removed, the EGR valve is OK.
    2. If the idle speed does not drop more than 100 rpm with the vacuum applied and return to normal after the vacuum is removed, inspect the EGR valve for a blockage; clean it if a blockage is found. Replace the EGR valve if no blockage is found, or if cleaning the valve does not remedy the malfunction.


    EGR Valve Removal & Install
    3.0L OHV (2 valve) and 3.4L SHO engines

    b9175c5.jpg

    Fig. : EGR mounting-3.0L OHV (2 valve) engine

    5fcd84e.jpg

    Fig. : EGR mounting-3.4L (SHO) engine

    4552fc2.jpg

    Fig. : Remove the two retaining bolts and...

    b849310.jpg

    Fig.: ... remove the valve from the intake manifold

    795549d.jpg

    Fig.: Thoroughly clean the mating surfaces of the manifold and the EGR valve (if being reused)
    1. Disconnect the negative battery cable.
    2. Remove the vacuum hose from the EGR valve.
    3. Using a 22mm wrench or crowfoot, disconnect the EGR valve-to-exhaust manifold tube from the EGR valve.
    4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
    5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
    To install:
    1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
    2. Connect the EGR valve-to-exhaust manifold tube to the valve, then tighten the tube nut to 26-47 ft. lbs. (35-65 Nm).
    3. Connect the vacuum hose to the EGR valve.
    4. Connect the negative battery cable.

    3.0L OHC (4 valve)

    d8a563e.jpg

    Fig. : EGR mounting-3.0L OHC (4 valve) engine
    1. Disconnect the negative battery cable.
    2. Remove the vacuum hose from the EGR valve.
    3. Remove the two EGR tube-to-EGR valve retaining nuts.
    4. Remove the EGR valve mounting fasteners, then separate the valve from the intake manifold.
    5. Remove and discard the old EGR valve gasket, and clean the gasket mating surfaces on the valve and the intake manifold.
    To install:
    1. Install the EGR valve, along with a new gasket, on the upper intake manifold, then install and tighten the mounting bolts to 15-22 ft. lbs. (20-30 Nm).
    2. Connect the EGR valve-to-EGR tube, then tighten the retaining nuts.
    3. Connect the vacuum hose to the EGR valve.
    4. Connect the negative battery cable.

    Tell us news.

    May 04, 2010 | 1999 Mercury Sable

    1 Answer

    1993 jeep grand cherokee, choking, pulling then stalled,


    Check:
    - Fresh Air Intake Hose: Clogged or Damaged FreshAir Intake Hose.
    - Carburetor: Worn, Faulty or Damaged Carburetor.
    - Mass Air Flow Sensor: Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
    - EGR Valve: EGR Valve Sticking Open/Leaking.
    - Idle Air Control Valve: IAC Valve Sticking or Faulty.

    Good luck.

    Aug 02, 2009 | 1993 Jeep Grand Cherokee

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