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Sami will not start

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loozoo730

Sami will not start
« on: December 27, 2007, 01:04:10 PM »
I have a 90 Suzuki Samurai. It has been sitting for over 4 years. We just replaced the Fuel pump and we know it works because it makes the noise. It turns over and it will fire when we spray starter fluid, but it seems to die within 5 secs. When it does run, it sounds healthy but it will not stay running. We are stuck at this point. Any help would get us back on the trails!
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luvmysammy

Re: Sami will not start
« Reply #1 on: December 27, 2007, 01:54:20 PM »
try replacing your cap, plugs, and plug cables....  also the rotor.... could be a ton of corrosion in there... plugs fouled out, or cables rotted and not getting the spark they need to ignite the fuel. since it is has a lower combustion rate then either.  my 2pennies.....

hope this helps.  matt
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Offline daddyizzle

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Re: Sami will not start
« Reply #2 on: December 27, 2007, 04:47:07 PM »
Surely you cleaned out the old tank and started with fresh fuel?

-Adam
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If all criminals were behind bars, there would be no one left to patrol the streets.

86 Samurai Tin-Top stock with a Harley 44 sidedraft carb
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loozoo730

Re: Sami will not start
« Reply #3 on: December 27, 2007, 11:00:36 PM »
When I spray in the starting fluid it starts and sounds like it is running pretty healthy. The fuel is new, but the tank is only about an 1/8 full. I will check the spark plugs tomorrow or this weekend. But like I said before, it seems to sound very healthy while running of the starting fluid. It just sounds like the fuel is not making it to the engine. I can hear the pump kick in when the ignition is on.
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Offline Drone637

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Re: Sami will not start
« Reply #4 on: December 27, 2007, 11:06:34 PM »
Pull the fuel line off of the carb and turn the key on.  Make sure you are getting fuel into the carb.

I just replaced a fuel pump then dropped the tank only to find a cracked hose.  :P
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loozoo730

Re: Sami will not start
« Reply #5 on: December 28, 2007, 10:55:57 AM »
If there is a cracked hose, wouldn't there be fuel leaking. I was just looking through my Haynes manual and I totally forgot to check the fuel filter, so that is my project tomorrow. I am going to try bypassing the fuel filter. Can anyone tell me where it is, I have an idea, also how easy is it to get to. I am also going to trace the lines from the tank to the throttle body.
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Offline ebewley

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Re: Sami will not start
« Reply #6 on: December 28, 2007, 11:06:53 AM »
Quote from: loozoo730 on December 28, 2007, 10:55:57 AM
If there is a cracked hose, wouldn't there be fuel leaking. I was just looking through my Haynes manual and I totally forgot to check the fuel filter, so that is my project tomorrow. I am going to try bypassing the fuel filter. Can anyone tell me where it is, I have an idea, also how easy is it to get to. I am also going to trace the lines from the tank to the throttle body.

Don't bypass the filter even for troubleshooting! Take the fuel line off right up by the throttle body ... wait a minute... Is this a Fuel Injection Samurai or Carb? '90 is FI, right?

-Eric
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phloop

Re: Sami will not start
« Reply #7 on: December 28, 2007, 12:07:09 PM »
I am not sure if the fuel filter is in the same location on the 90's but on my 88 it is mounted to the inside part of the pass. side frame in front of the fuel tank above the rear axle. And I am going to guess that the filter location probably did not change when FI was installed.
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Offline daddyizzle

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Re: Sami will not start
« Reply #8 on: December 28, 2007, 08:21:04 PM »
Quote from: loozoo730 on December 27, 2007, 11:00:36 PM
When I spray in the starting fluid it starts and sounds like it is running pretty healthy. The fuel is new, but the tank is only about an 1/8 full. I will check the spark plugs tomorrow or this weekend. But like I said before, it seems to sound very healthy while running of the starting fluid. It just sounds like the fuel is not making it to the engine. I can hear the pump kick in when the ignition is on.

If it's only 1/8 full, who knows what might be mixed with the fuel, maybe water. That wouldn't burn. Otherwise, like others are saying, check to see if their is fuel going to the throttle body. I assume it has it's original f.i. engine unless it was a swap.  Does the fuel pump have a blown fuse?

-Adam
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If all criminals were behind bars, there would be no one left to patrol the streets.

86 Samurai Tin-Top stock with a Harley 44 sidedraft carb
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loosebolt

Re: Sami will not start
« Reply #9 on: December 29, 2007, 10:46:39 AM »
dont know if you got it fixed yet but try pulling the fuel line to the throttle body while the ignition is turned on(should here a humming noise from the fuel pump) if you have fuel there the problem is probably the fuel pressure regulator. locate the regulator and make sure the vacuum line is good and the diaphram inside does not have a hole in it. to test that put a vacuum line on it and suck on it if you just suck your cheeks in its probably good if you get a mouth full of gas its bad. What you are explaining with the fact that it will run on ether means it is not a ignition or compresson problem it has to be fuel.   
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Offline flexmonger

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Re: Sami will not start
« Reply #10 on: December 29, 2007, 05:32:50 PM »
  Check if the fuel is reaching the injector. Same thing just happened to mine 2 days ago, on my 92' sammy. Fuel pump works and relay, you can hear them kick on. Spray starting fluid down throttle body and it would run. Fuel was reaching injector and injector was not spraying. Pulled t/b harness and hot wired the injector and got it to work. All that lead to one last thing. The ECU or computer was fried on the injector end only, capacitor melt down. Got one from Hawk the following day, solved the problem and was on my merry way.
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ridingmystic

Re: Sami will not start
« Reply #11 on: December 29, 2007, 09:43:56 PM »
I'm having the same problem. I drove my 1987 Samurai to work Friday went to leave it died. It will start for a few seconds then die. I took the fuel line off at the throttle body then cranked the engine plenty of fuel coming from the fuel pump. This is a carb engine not fuel injected. If you can help me e-mail me at kenbyler|removethispart|@hotmail.com I have tried everything runs great if you stand their and keep pouring fuel in the carb.
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Offline Drone637

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Re: Sami will not start
« Reply #12 on: December 30, 2007, 02:11:49 AM »
Quote from: loozoo730 on December 28, 2007, 10:55:57 AM
If there is a cracked hose, wouldn't there be fuel leaking.

On a Tracker/Sidekick it would because the fuel pump is in the tank.  But on a Sammy, or any vehicle with an external fuel tank, if there is a leak in the fuel line the pump cannot create enough of a vacuum to suck the gas up the fuel line as it is easier to suck up air then fuel.


Ridingmystic:  Sounds like your carb may be plugged up.  I would try a different carb if you can.
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x-Trouble Racing
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ridingmystic

Re: Sami will not start
« Reply #13 on: December 30, 2007, 05:39:46 AM »
I didn't know if their was a fuel cut out on this carb or if the fuels regulated somehow through a electronic sensor. their are 3 plugins going to the carb i don't know what their for maybe someone can tell me. Thanks for the feedback. :o
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loozoo730

Re: Sami will not start
« Reply #14 on: January 01, 2008, 07:05:08 PM »
Will the pump pump fuel is the battery is low? I have the line disconnected from the filter and I am trying to see if the pump is pumping. I can hear pump when I put my ear up to the tank I can hear it running
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