Question about Watts Onan Portable Generator - 4000 , Model# 5500

1 Answer

ONAN 4000, in 94 model class C RV, running good, just stopped, all fuses checked ok, gas to carburetor gas filter clear doesn?t appear to be stopped, gas in bowl of carburetor, there is fire to plug, no evidence of gas to plug though, suspect trash in carburetor. Any trouble shooting ideas on starting point before have to remove carburetor?

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.

  • Contributor
  • 1 Answer

Problem solved, Appears fuel pump went bad and only gas in Carb was residue.

Posted on Oct 08, 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

Hi there,
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.

Here's a link to this great service

Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

WE are having carburetor problems with our Cummins Onan RV generator RVQG5500. When we hold the choke down or spray gas into it, it will run, but as soon as we quit doing this it stops

Have you checked for a clogged fuel filter? Does the carburetor have a float? If so, maybe the float needle is getting stuck! Are you using ethanol-laced gasoline ... which can DISSOLVE viton-tipped needle valves?

May 12, 2017 | Electrical Supplies

1 Answer

I have a 6500 lp onan marquis generator in my rv that wont start. any suggestions?

Check the fuel. If old, drain & refill it.
Check for spark.
If the fuel is there and good, trace it to the carburetor. Check the carburetor bowl for fuel.
Check the spark plug, the magneto, any switch that breaks the circuit or kills the circuit for spark.
If you're getting good fuel to the carburetor and you're getting good spark, try to start it with ether spray.
You might also want to check compression while you're checking everything else.

Jul 26, 2014 | Onan Marquis Gold 6500 Lp

1 Answer

Troubleshooting onan repair

Check for a bad fuel pump and a clogged fuel filter.

Jul 16, 2014 | Onan-Orderable Cummins Onan 2.8 KV-FA/...

2 Answers

Where is the fuse on the onan 5500 built in generator?

Try under the bench seats around the table, near the heater.

Jul 14, 2014 | Onan Marquis Gold Quiet Gas Generator 5500...

1 Answer

My onan 2.8 gen. starts but quits when i let off the starter button, what can i do to fix it

maybe old gas or dirty carburetor first replace the gas if nothing happen open your carb and clean the pilot of the carb its one small screw w/holes inside most times get clog

Apr 14, 2013 | Onan Cummins 2.8 KVD-2090 RV QG 2800 RM...

1 Answer


Possible solution: if it's been sitting idle for some time, you might need to flash the windings. see this link:
If you're uncomfortable doing it yourself, your Onan dealer can do it in 10 minutes.
Don't forget to check the circuit breaker on the generator itself!

Sep 01, 2011 | Watts Onan Portable Generator - 4000 ,...

2 Answers

I have an onan 5500 gas generator that wont start

What is the model? Chances are the carb needs cleaning or replaced.

Sep 21, 2009 | Watts Onan Portable Generator - 4000 ,...

1 Answer

Onan genset generator in rv is running but no power to rv...circuit breaker has been checked and main breaker in rv has been checked still no power

on your generator ther is a reset if thats not it check for fuses if still no then u neda check the wires in the pluges if no then ur generator it self needs re bilt

Aug 29, 2009 | Watts Onan Portable Generator - 4000 ,...

Not finding what you are looking for?
Watts Onan Portable Generator - 4000 , Model# 5500 Logo

625 people viewed this question

Ask a Question

Usually answered in minutes!

Top Watts Electrical Supplies Experts


Level 1 Expert

45 Answers


Level 3 Expert

3289 Answers

Brad Brown

Level 3 Expert

17328 Answers

Are you a Watts Electrical Supply Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides