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Old 09-20-2013, 03:36 PM   #1
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2000 Tradewind Won't Start

Use the MH two weeks ago and it ran fine, went back today, the engine turns over fine but it won't start. I suspect something electical in the fuel system. Any suggestions?
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Old 09-20-2013, 04:56 PM   #2
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bheitman; could you please , go into " Edit signature " from the " User C P " and fill out a signature line , with information on you coach.
Year, Model , engine , chassis .
That info will then appear below each post you make , and give other members who may be able to help a better idea of what info you need .
First step is to check all the fuses, with a test light or a voltmeter.
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Old 09-20-2013, 05:57 PM   #3
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Check the fuse that is connected from the positive post in the battery compartment
to the ECM on the engine.
If by chance it is not there check the voltage to the ECM with the key on.
National is known for a loss of power to the required connection most common problem is a blown fuse, wire forgotten when doing some thing with the batteries,
ect ect.
The other causes are no oil pressure( can be checked while turning the engine over)
and a lack of fuel due to air leak in system or improper fuel filter install.
This just names a few common problems.
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1999 Trade Winds 7371 Cat 3126B w/current upgrades
1990 D 250 Dodge Ram Cummins Turbo
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Old 09-21-2013, 05:05 AM   #4
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Thanks Art, I'll check those thing out.
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Old 09-21-2013, 05:14 AM   #5
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On several I have worked on they run a red wire with a inline fuse to the coach
positive side of the batteries, sometimes you have to look for it.
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Old 09-21-2013, 04:17 PM   #6
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Art found the wire and checked the fuse and it looks good. Is there a electrical fuel shut of on this. Seams strange it was running good when put away wit no problems.
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Old 09-21-2013, 04:46 PM   #7
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Never seen a electric fuel shut off on one.
Check for voltage looks can fool you.
Do you see oil pressure on the gauge when you spin it over Cats need that or no
start as it fires the injectors.
If you have a fuel prime pump try pumping it a few time and see if you have
a leak in the fuel line to the tank that put air in the line.
I have see a bad fuel line cause a no start several times.
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Old 09-21-2013, 05:11 PM   #8
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I'll have to have a tech check those other things out. If its low oil presure, do oil pumps go bad just sitting there? Whe turning the engine over I couldn't see the gauge moving but I don;t recall seeing it move before either.

Again, Thanks for your assistance and time.
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Old 09-21-2013, 05:25 PM   #9
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Normally you see a slight movement of the oil gauge if one has to crank over 20 seconds.
If I had to bet money on the problem I would go with a leak in the fuel line if voltage
is present to the ecm.
What happens is as the unit sits air allows the fuel to drain back or out on the ground. Several coaches as time goes by have had that problem and in a lot of them
the leak is near the tank, not all but most.
No the oil pump will not go bad just sitting not to say it could not just not normal.
Once the engine hatch is open the prime pump is on top of the fuel filter, pump is
several times and see if the engine fires may take several pumps.
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Old 09-21-2013, 07:28 PM   #10
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When you state engine hatch, is this the back grill or under the bed?
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Old 09-22-2013, 05:12 AM   #11
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Under the bed, I know a heavy thing to open.
Filter is dead center at the back of the engine when you look in and the pump
is a plunger type on top of the filter.
There should be a small screw on the top of the filter that you loosen to let the air
out when pumping, be careful not to loosen it to far as it is hard to find if you drop it.
You might have a look at the other filter located by the rear drivers wheel and see
if you see fuel in the bowl.
If per chance you do not have a prime pump things get difficult.
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1990 D 250 Dodge Ram Cummins Turbo
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Old 09-22-2013, 12:36 PM   #12
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Art, again THANKS for your info and time. Couple of questions, normally is the fuel line Steel of Ruber? Also I assume this coach has an Electric Fuel pump, could this also be a possibility.

If our paths ever cross, I owe you a few Cold Ones. The Boss is really upset we didn't get to go camping this weekend...Bill
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Old 09-22-2013, 01:32 PM   #13
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No such luck on electric pump unless someone installed one.
The fuel lines are rubber or at least that is what I have found.
If I do not start the engine at least once a month it takes a few tries
to get the fuel to the engine.
About the only time I use the prime pump is when I change fuel filters.
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Old 09-22-2013, 01:47 PM   #14
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bheitman; Art is giving info based on a Cat engine , is that what you have?
Cummins engines use an electric lift pump; Cat a mechanical , supply lines to the pump and filters on my Cat are rubber. Cat engines have a pressure regulator in the fuel return line at the transmission end of the cly head. I've heard of starting issues if those go bad. Return fuel line is blue plastic, on my coach.
If your dash lights (Cat engine, wait to start in particular ) do not go on, 3>5 seconds for the bulb check, when you turn on the key, the Engine Control Module has no power or ground, you have to check both.
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