Question about 2004 Honda Honda Fusion
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.
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 seal.now 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
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
Tips for a great answer:
Feb 10, 2017 | 2005 Honda Metropolitan Base
Nov 05, 2016 | 2004 Honda Metropolitan Base
Apr 25, 2016 | Motorcycles
Feb 14, 2016 | Honda Motorcycles
Aug 18, 2014 | 2004 Honda Metropolitan Base
Mar 17, 2014 | 1996 Geo Metro
Oct 14, 2011 | 2006 Honda Metropolitan
Mar 29, 2011 | 1995 Honda CBR 1000 F
Jul 12, 2009 | 2002 Honda Xr Baja
Dec 05, 2013 | 2004 Honda Honda Fusion
2,620 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: