Question about 2004 Honda Honda Fusion

1 Answer

2004 Honda Metropolitan Scooter - cold engine starting problem

I have a 2004 CH50 Metropolitan (Metro I) Scooter with 1000 miles. Runs perfect in warm weather… This past Fall I had severe problems starting the engine when cold (below 70F). It most certainly is too lean (no choke). I check Starter Enrichment valve and it is correct resistance (5.8 ohms). Spring in valve works well by hand and valve looks pristine. I measure voltage on valve connector and get +12V when key is “on”. I look at schematic, and see the ECM switches the ground (-12V) in order for SE valve to turn on. Problem is ECM doesn’t switch this negative lead to the valve, Starter Enrichment Valve never powers-up, and therefore cold engine is trying to start with lean mixture. I have reset the ECM per Honda manual – didn’t help.
My questions –
1) Am I right to assume the ECM turns on Starter Enrichment for cold starts? Valve on = enrichment?
2) What is the ECM logic for turning on the Starter Enrichment?
3) Does Engine Coolant Temperature sensor tell ECM that engine is cold and therefore to turn on Starter Enrichment?
4) What’s the chance that the ECM is bad? Everything else works.
Any help in this matter will be gratefully appreciated.

Jim Stricker

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert whose answer got voted for 20 times.


    An expert who has written 20 answers of more than 400 characters.

  • Expert
  • 66 Answers

I had this problem before,i suggest first replacing starter valve w/ a chinese equivelent part(cheaper than honda but the same),can also replace w/ manual enrichener plunger, but it is inconveinent to access, or what i did was seal off plunger hole and squirted gas through fuel line and a primer bulb, teeing off from main fuel line run spigot fitting into plunger bore and jb weld to mount primer bulb in convienent location.definitely an unauthorized repair and a little tedious to fabricate ,but works like a charm, as those starter valves are notorious for not working correctly.

Posted on Feb 16, 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.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
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:

1 Answer

I recently had the rear plastic off my 05 honda metropolitan and now it wont start only click click click help

Hi, Robert before testing any electrical component in the Starter Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, especially "AGM" batteries. A motorcycle starter relay is an electronic mechanical switch that has a small coil winding around a piece of metal that requires low amperage and thin wires to be activated. When you turn on your ignition switch power 12 volts is sent to the relay coil which in turn becomes a magnetic contact point that pulls a spring-loaded contact point to itself completing an electrical circuit that allows more amperage necessary to be accessed by the starter solenoid which in turn acts in the same way as the relay but on a larger scale with its stronger heavier contacts making available the necessary amperage to turn the starter motor. If your battery has low voltage it, in turn, makes the magnetic contact point weak in trying to pull its counterpart to make a connection. These relays are usually encased in a plastic housing that may or may not be sealed depending on the quality of the product. When activated they will produce a small amount of heat to their metal components which in turn can create the perfect environment for condensation to form depending on weather conditions and how careless you may be with a water hose or sprayer while washing your bike. After a period of time, several months to several years depending on the circumstances this condensation is the starter button for electrolysis and the slow build up of corrosion which ends by preventing the magnetic contacts in making a solid connection and alerts you to this situation with the customary greeting "CLICK". The relay is inexpensive and needs to be replaced however in a pinch they can be forcibly opened cleaned and resealed with silicone. In a nutshell, motorcycle starter relays take in low amperage and send out higher amperage when activated and for curious minds, the voltage remains constant at whatever your battery reads at the time.
For more information about your issue and valuable "FREE" downloads that you will need please click on the blue links below. Good luck and have a wonderful day.
urbanscootin com Honda Metropolitan Scooter Forum View topic Scooter won...
Scooter Troubleshooting Scooter won start All about Scooters
CHF50 Metropolitan Honda Scooter Service Manual Printed by CYCLEPEDIA $35
Honda CHF50 2007 Metropolitan Owner Manual

Apr 25, 2017 | Honda Motorcycles

1 Answer

What is the diameter of the gas line on the CH50 2005 Honda Metropolitan

Hi, Ron most scooter fuel line ID is 6mm to confirm I would call my local dealer or reputable shop's service/parts department and inquire about any possible quick fix, answers, or parts inquiry. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Honda CHF50 Metropolitan Online Scooter Service Manual Cyclepedia
2002 2009 Honda CHF50 Metropolitan Service Manual Kindle Edition!ot8ERBLJ!7mODDsURFeBm1p5pIxcZIJfAhTTEuCK6EJWNstlBj0k This is a "FREE" .rar zip file you need to download a program like "WINZIP" to view the service manual
Honda CHF50 2007 Metropolitan Owner Manual

Feb 10, 2017 | 2005 Honda Metropolitan Base

1 Answer

2002 Honda metropolitan won't run got spark to plug an gas to the carb I reset ecm spins over but no attempt to start also headlight doesn't work but getting fire to the plug an bulb works with jumper

Hi, Lewis 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. Fuel line to carburetor or throttle body pinched or kinked.
8. Carburetor float stuck.
9. Fuel injectors clogged.
10. Severely discharged or damaged battery, you need 12.5 volts or better and be able to pass a load test if necessary.
11. 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.
12. Loose or corroded wire connection at the coil, battery or plug between ignition sensor and CDI box.
Spark plug cables in bad condition and shorting check for leakage in the dark, cable connections loose, or connected to the wrong cylinders.
13. Ignition timing incorrect due to a faulty MAP, CKP, O2, TPS, sensors.
14. Faulty neutral, clutch lever, or kickstand safety switch.
15. Faulty fuel pump or fuse or relay.
16. Faulty CDI box.
17. A stuck bent or burnt valve.
18. Tip over sensor needs a reset.
19. Check for engine trouble codes.
For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
Scooter Troubleshooting Scooter won start All about Scooters
2005 Honda Metropolitan Scooter Rough Start and No Power
Honda CHF50 2007 Metropolitan Owner Manual

Nov 05, 2016 | 2004 Honda Metropolitan Base

1 Answer

Starts and runs but will only go 25 top end and 10 going up a hill. I cleaned carb, and changed plug. Filter good. Any help about how what to try next?

Dennis, Write up found in scooter link below.This scooter was restricted to 25mph via a series of restrictions to the variator, ECU, intake and camshaft. 2009 was the last model year for this CHF50 in Canada and the USA, although this scooter was available for a few years after this due to excess inventory from the 2009 crash of the scooter market.
You can have it modified at a shop probably $$.
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
honda metropolitan top speed test run
Honda Metropolitan Jazz Ruckus Resource page
The Fastest Upgrades for Metropolitan Scooter eHow

Apr 25, 2016 | Motorcycles

1 Answer

2004 Metropolitan scooter. Where is the air/fuel mix screw located?

Hi, Richard 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.
urbanscootin com Honda Metropolitan Scooter Forum View topic Mixture screw...
50cc GET Carburetor Basic Tuning

Feb 14, 2016 | Honda Motorcycles

1 Answer

Why is the temperature gauge on and my 2004 Honda Metropolitan running slow?

Temp sensor fault ,will tell brains to slow engine as it believes the engine is overheating . Check sensor or sensor wiring , coolant level ok .

Aug 18, 2014 | 2004 Honda Metropolitan Base

1 Answer

Honda metropolitan

replace your spark plug first , if this doesn't fix problem you may need to change fuel filter , if still fails have your carby cleaned .

Mar 28, 2014 | 2004 Honda Metropolitan Base

1 Answer

1996 goe metro hard to start fuel problem

ever tune it up, every 60,000 miles, this decade?
cold fuel is hard to burn, and bad spark is cause.
tune it up.
spark parts never last the life of any engine.
nor work cold , and damp, when old.
oldest cause on earth.

Mar 17, 2014 | 1996 Geo Metro

1 Answer

I have a Honda 2006 Metropolitan CH50 scooter that is hard to start when cold. When I finally get it started and it runs for a little while it seems to do okay. Wonder what the problem is when it is cold....

carburator needs cleanin or ajustin--the choke passages are cloged with dirt or varnish--certain fuels-specially ethanol can cause it--purchase a repair manual or let a pro doit

Oct 14, 2011 | 2006 Honda Metropolitan

Not finding what you are looking for?
2004 Honda Honda Fusion Logo

2,657 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honda Experts

Arnie Burke
Arnie Burke

Level 3 Expert

4514 Answers


Level 3 Expert

74544 Answers

Gino Cussen
Gino Cussen

Level 2 Expert

216 Answers

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

Answer questions

Manuals & User Guides