Question about 1984 Yamaha XJ 400

1 Answer

Hi i have a 1984 yamaha moto 4 quad it won't stay running but it has gas and spark

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.


    An expert whose answer gotĀ voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 6 Answers

Are you sure you have gas? How long will it run until it dies? If it dies out once it warms up then you have a coil problem. More than likely what is happening though is that you have enough gas to start the engine but the flow rate is affected somehow and the carbs are not able to continue to supply the proper fuel amount. I would suggest rebuilding the carbs.

Posted on Sep 05, 2009


1 Suggested Answer

  • 2 Answers

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

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

2 Answers

Head torque specs on 1987 Yamaha moto-4 350 Quad

Try this manual hope it helps,

Aug 09, 2016 | Yamaha Motorcycles

1 Answer

Will a 1983 xj 550 cdi box fit a 1984 xj 600

Hi, Andrew after careful deliberation 4 out 5 Yamaha Gods give this one a thumbs up, but just to be on the safe side you should give your local dealer's parts/service department a call to confirm. Good luck and have a nice day. DIY how to test CDI for motorcycle quad jet ski ignition stator magneto...
Electronic CDI Box Repair 75 Success Rate
92 99 Yamaha XJ600S X600N Service Manual Moto Data Project

Dec 21, 2015 | 1984 Yamaha XJ 600

1 Answer

Yamaha xc180 no spark

Hi, Anonymous for more information about your question and valuable "FREE" downloads that you will need please visit the websites below. Good luck and have a nice day.
1984 Yamaha Riva 180 been sitting for 8 years won start General Dirt Bike...
Yamaha Riva 180 washed now no spark
OEM parts for Yamaha
Yamaha Owner Manuals

Sep 29, 2013 | 2004 Yamaha DT 125 R

1 Answer

Yamaha kodiak 1984 runs with choke out a bit ,but once pushed in ,quad quit,s and and won,t start till you pull it out again some

Your carburation is dirty. Remove the carbs, clean, adjust float and re-install. Should be fine.

Jun 30, 2013 | Motorcycles

1 Answer

1984 ytm trimoto 200e pictures

Hi, Anonymous for more information about your question and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
1984 ytm tri moto 200e pictures Google Search
YTM 200E Parts Accessories eBay
1984 Tri Moto 200E Restoration with added Reverse
Yamaha Wiring Diagrams

Mar 26, 2013 | Yamaha Motorcycles

1 Answer

I have a 1984 Maxim XS 400 L that won't stay running unless choke is on

Hi, Dmg24jeff and the usual suspects are:
1. Fuel cap or fuel tank is not venting properly.
2. Fuel filter clogged.
3. Fuel line pinched or kinked.
4. Float needle and seat sticking.
5. Float level too low.
6. Carburetor bowl vent line clogged/blocked/pinched.
7. Idle adjusting screw set too low.
8. Air/fuel mixture screw set too lean.
9. Idle port, transfer ports, slow air jet clogged.
10. Slow fuel jet clogged.
11. Faulty fuel pump.
For more information about your issue and valuable "Free" downloads that you will need please Click on blue links below. Good luck and have a wonderful day.
Only runs when choked
Bike won Run without Choke
Yamaha XS400 1977 1982 Factory Service Repair Manual PDF Download Manuals... $10
OEM parts for Yamaha

May 23, 2012 | 1984 Yamaha XS 400 L Maxim

1 Answer

2004 r6 starts but won't stay running what I do

Hi, Mckinneym697 and the usual suspects are:
1. Idle circuit and transfer ports clogged.
2. Air fuel mixture adjustment too lean.
3. Pilot jet clogged.
4. Faulty accelerator pump.
5. Float level too low.
6. Float bowl contaminated old fuel, water, dirt, rust, etc.
7. Float bowl vent or overflow tube clogged.
8. Fuel flow to carburetor restricted.
9. Intake manifold leak.
10. The gas cap is not venting properly or fuel tank venting system blocked.
11. Vacuum line from intake manifold to petcock broken, cracked, or not attached, carburetor vent line plugged.
12. Needle and seat stuck closed in the float bowl.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have nice a day.
2007 Yamaha R6 won idle more info inside motorcycles
Wrecked bike starts but doesn stay running ideas
2003 2004 Yamaha YZF R6 Service Manual R6 Moto Data Project
OEM parts for Yamaha

Jul 14, 2011 | 2000 Yamaha YZF-R6

Not finding what you are looking for?
1984 Yamaha XJ 400 Logo

684 people viewed this question

Ask a Question

Usually answered in minutes!

Top Yamaha Experts


Level 2 Expert

281 Answers

Steve Sweetleaf
Steve Sweetleaf

Level 3 Expert

1144 Answers


Level 3 Expert

2600 Answers

Are you a Yamaha Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides