Question about Suzuki DR-Z 400 E Motorcycles

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My 2006 DRZ400E is very hard to start when cold. Have replaced spark plug with no change. Air filter is also not an issue Once the bike gets running then starting is not a problem. Anyone got any suggestions?

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Check that your choke is shutting of the carb mouth

Posted on Apr 26, 2010


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My Suzuki Eiger 400 starts hard then once running is great.

The carburetor choke valve might be stuck open or not closing when the engine is cold. The engine needs a richer mixture to start. Too rich a mixture (flooding) can also cause trouble. Turn the fuel valve off to be sure the carb isn't leaking when not in use. If it smokes black on startup, it's flooding. Also check the condition of the spark plugs.

Sep 23, 2014 | ATVs

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My Roadliner is hard to start when cold, almost like it is flooding, I can smell gas if I let it crank for too long. Once I get it started and warmed up it starts fine.

Interesting. I have identical problem on mine. I have about 6500Miles on it and all of a sudden showed identical symptoms. I changed air filter and spark plugs to get it started. It starts now but after couple of attempts and needs to warm up until becomes operable. please let me know if you solved yours !

Apr 23, 2011 | 2006 Yamaha Roadliner

1 Answer

I have a 2006 Freestar with a 3.9 Engine . When it is cold it has a miss when i step on it. But it gets better when it starts to warm up. Almost seems like a spark plug miss

Spark Plugs ---change at 70,000 miles
O2 Sensors--change at 100,000 miles (front 2 only)
Gas Filter--every 3 years/30,000 miles
Air Filter ---every 3 years/blow off once every year
MAF Sensor---Clean once a year or more often

Ignition Coils--- most definitely will go bad,at
least 1 a year. (Any Check Lights or Codes ? )

When cold, it isn't in closed-loop, and runs on
Long Term Fuel Trim--not on O2 Sensors ,until

Let it warm up at least 4 minutes in cold weather,
go light on the gas for first 2 miles

Feb 22, 2011 | 2006 Ford Freestar

1 Answer


Hi, Stevensmi601 your bike starts great when cold but once it reaches operating temperature and the engine is shut off for a few minutes then you try to restart it and it will turn over but will not fire or it doesn't do anything, the usual suspects are:
1. When electronics get hot they build up resistance then stop working. It might be an ignition coil, stator, CDI unit etc. First, you must find out if the spark dies out. When the bike won't start, pull a plug wire off, stick a new spark plug in the end and ground the threads on bare metal while someone cranks the engine over. You should see a nice big blue spark between the spark plug gap. Incorrect spark plug gap will cause or contribute to a no start when hot issue.
2. Fuel Tuners have been known to cause this type of problem, disconnect it and see if resolves the issue.
3. Any engine management sensor could be faulty especially the ones that monitor temperature.
4. Gas cap not venting properly, improperly routed fuel lines they must always go down from the gas tank to the carburetor never in any kind of a loop this will cause a vapor lock. Clogged, bent, kinked, pinched or restricted carburetor vent lines will do the same.
5. Overhead camshaft valves adjusted too tight when cold, this will cause loss of compression when hot, except for pushrod engines they usually get looser when hot.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
honda CRF250R Hard to Start
Honda 2004 CRF250R Service Manual
HONDA CRF250R 2006 Owner Manual

Nov 06, 2010 | 2005 Honda CRF 250 R

2 Answers

Trouble starting but once started runs good

How long since your bike was properly serviced? Service includes oil, oil filter, air filter, spark plugs, valve clearance check, fuel filter etc. Check for cracked PCV vent hoses around throttle bodies. checking of throttle body sync. These bikes usually run very well when properly maintained. Trouble starting when cold could be caused by many different things.

Good Luck!

Oct 10, 2010 | 1993 BMW K 1100 LT

2 Answers

I have a yamaha virago xv250 03' model. Its done

first thing to do is to drain oil from your motorcycle use wrench 17(size may vary) to open the bolt under your bike and place a drain bucket under it, then remove spark plug using spark plug remover, as for the filter you can use a cross screw driver to remove the air filter, once you replace the spark plug and the air filter let the oil subside for about 3hrs, then return the bolt and place new oil, i dont know if this help but i hope it will

Sep 18, 2009 | 2004 Yamaha Xv 250 Virago S

1 Answer

Karishma starting problems how to sought out this all problems of getting start the bike

This problem is because of the fuel what you use. you better clean the carburetor, air filter and the spark plug, if possible replace the spark plug and the air filters. Then fine tune the carburetor and bring the engine RPM to 750-900 to sort out this issue.

Jun 08, 2009 | 2006 Hero Honda Splendor+

1 Answer

Hard to start

hellow that is a R1 Not a honda civic it takestime for fuel pump to get going also ecu to work fuel injection to kick in

I Have A R1 2000 carb and i ride with a lot of guys these bikes just take 2-20 secs to start after that they run great your bike is fine leave it alone

Mar 13, 2009 | 2006 Yamaha YZF-R1

1 Answer

Hard starting when cold

u must check the valves,very important. clean your carb, change your oil, clean your air filter, change your spark plug one number lower than u are using now because the lower the number on the plug the its stays hotter longer, people make the mistake of thinking the lower the number the hotter the plug burns, wrong your a rookie if u think like this. i no for a fact u didnt do all of these yet, so do these exact things i told u and you'll be fine trust me.

Jan 20, 2009 | 2006 KTM 450 SX

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