2004 Tracker - 2.5 V6, Hard starting due to flooding when engine is cold. Advice? - Suzuki Forums: Suzuki Forum Site
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Old 12-03-2010, 08:30 PM   #1 (permalink)
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Default 2004 Tracker - 2.5 V6, Hard starting due to flooding when engine is cold. Advice?

Short story long, our Tracker intermittently has "hard starting" or will not start first thing in the morning, or in the afternoon after work, when I want to come home. I have a 2000 GV factory service manual that offers tons of help, but every test I do, the engine passes.

There are no OBDII engine codes. The engine turns over effortlessly. Every injector has the correct resistance (Resistance of injector: 13 16 ohms at 20C/68F). The "ignition spark check" proceedure is successful. Spark plugs are the correct ones (NGK IFR5J11) and gaps are perfect. I have not confirmed that the CMP sensor is good, because the check requires two people when checking voltage at the ECM, but the voltage at the CMP sensor is correct.

I know the cause is flooding because when I cannot start the engine after a unsuccessful attempt, I :
1. disconnect the "injector coupler" (main electrical connector to all six injectors) so no more fuel is provided to the engine,
2. turn the engine over,
3. the engine fires up for two to three seconds until the volume of fuel in the intake is used up,
4. re-connect the injector coupler,
5. start the vehicle normally without further issues.

I did notice what looks like carbon build-up in the combustion area when I removed the spark plugs. Perhaps this is the cause? Also, I wanted to confirm the ignition timing, but for life of me, I cannot find the "monitor coupler" which allows you to make the ignition timing fixed for adjustment.

So, I am curious to know if anyone else has solved similar problems, and if anyone has service instructions that are specific to the 2004 Tracker V6. Any other thoughts would be appreciated.
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Old 12-04-2010, 05:43 PM   #2 (permalink)
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Have you put a gauge on the fuel rail and checked
  • Pressure within spec
  • no injector leak down,
  • Fuel pressure regulator working?
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Old 01-24-2011, 01:52 PM   #3 (permalink)
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I have the same exact issue. No start. checked and it is getting spark. Disconnected fuel line on the input and return and both sides are putting out fuel. I disconnected that plug and it fired right up for a few seconds, plug it in and it starts up and runs like nothing was wrong. I found that my vehicle has a factory recall on the fuel pressure regulator.
"On certain passenger vehicles, under ambient temperatures below -25 degrees celsius, moisture can freeze in the fuel pressure regulator. As a result, fuel system pressure may increase at the time of engine start up, causing fuel loss at the fuel pipe/fuel hose connection. Fuel loss in the presence of an ignition source could result in a fire. Dealers will replace the fuel pressure regulator, the fuel deliver hose and replace the hose clamp with an improved clamp."
Mine is a 2001 and it happened the last few days and temp today was -14 degrees Fahrenheit. -25 Celsius is -13 Fahrenheit. haha. I am bringing it in to the dealer on wednesday. They are checking the vehicle for other possible problems that have been recalled. I will try to post up here to let you know what i find out and if it does truly fix the problem. -Greg
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Old 01-24-2011, 03:37 PM   #4 (permalink)
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Nic! Give this scenario some thought. Is it flooding or simply not FIRING in order to burn off that accumulated / injected fuel from the start attempt?

Does it smoke black / rich when it DOES finally start?

I'm thinking lack of spark in other words. Why? Not sure.
IF it was the 2.0 4-banger I'd jump on the Cam Position Sensor, but they appear not to fail very often on the V-6's. Even then, they predominantly are a HOT engine issue, vice cold.

What do you think?

And Daring...I think you are on top of YOUR prob w/the reg and freezing temps.


You guys have both done your homework BTW.
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Old 01-31-2011, 10:14 AM   #5 (permalink)
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well i brought it to suzuki and they checked their computer and found out that the part was already replaced by recall. I however still felt that the part was bad, so i bought one and put in on it. Went on well and it starts fine, but i can't tell if it fixed the prob at cold cold like before as the temp has risen above 0* now.
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Old 01-31-2011, 10:17 AM   #6 (permalink)
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I hope ya' got it Bud. Keep us posted.
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Old 02-12-2011, 03:41 PM   #7 (permalink)
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Which connector exactly are you disconnecting then putting back? Can you take a picture to describe the location? If i have to, i will put a switch under the dash to cure this problem, same here, doesn't like to start when below zero outside.
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Old 02-12-2011, 03:57 PM   #8 (permalink)
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Mozz! Are you referring to post #5 or something else? He's talking about the Fuel Pressure Regulator, if so.
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Old 02-12-2011, 04:04 PM   #9 (permalink)
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Referring to the original post where he said he disconnects the plug, starts the vehicle, it uses up all the fuel ,then dies, he reconnects the plug then all is well.
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Old 02-12-2011, 08:45 PM   #10 (permalink)
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Ah. this...
Quote:
1. disconnect the "injector coupler" (main electrical connector to all six injectors) so no more fuel is provided to the engine
I'm not sure where that is located.
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'03 Honda Odyssey (Momma's ride)
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