Drz400 Thread

Discussion in 'Thumpers' started by Britmick, May 4, 2007.

  1. XJHero

    XJHero Adventurer

    Joined:
    Feb 24, 2013
    Oddometer:
    12
    Thanks for the response MotoBoss. A fuel issue does seem like it could be a problem, maybe even a flooding issue. I know i flooded it the first time i tried starting it by checking the plug(fuel fouled). Smelled gas as well. I cant check my oil for fuel contamination cause the fill was tightened by hercules and i cant get it off without some heat/serious force.
    Theres no in line filter, so could be junk in tank/line/carb. Should i try starting with the fuel/tank? I have gotten bad gas before, had similar issues on bikes/cars with that problem, so ill prob pop the petcock off, drain the tank and refill with a different brand. I heard trying to drain the carb bowl will tell me if the carbs getting fuel, just not sure which screw it is. If it is clogged jets, how would i go about cleaning them? Need to remove or can i use carb cleaner with them in the carb still?

    I did check that kill switch. I should also mention, its an R version, but it is plated with all the street legal stuff, horn, blinkers, etc, and i have a light switch that powers the ignition,(wont turn over unless this is on, not sure if all models had this switch on the leftside or if its aftermarket), as well as an ignition, and a pull in type kill switch(pull in the make contact and kill ignition, let go and contacts are spaced. I didnt put a meter to the kill switch, but it seems all good, no corrosion or anything to suspect a fault. Im still fairly new with electrical work so I cant say for sure its good. I also have a red push in button for high and low beams, and i heard on another forum that button needed to be in a certain position, but what that was i never got clarified. Any more info?
    Again, thanks for the help.
  2. element6

    element6 Adventurer

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    49
    Silly question perhaps, but are you using the choke?
  3. buls4evr

    buls4evr No Marks....

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    The only problem you will have is a $.50 sealing o-ring on that float valve after 5 years. no problems with needles at all or brass holder in the carb. Replacement is a waste of $$$. Contact Keintech for the O-ring. You must be reading Thumper Talk too much:D.
  4. XJHero

    XJHero Adventurer

    Joined:
    Feb 24, 2013
    Oddometer:
    12
    Yes, ive been using the choke to try to start it. Previous owner said it would fire right up, even in cold weather with just the choke, no throttle. I have tried without the choke a few times just to see, no change though.
  5. dhb400

    dhb400 No Regrets

    Joined:
    Feb 19, 2012
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    240
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    Jersey Shore
    ++1. Sometimes when you mess with it you ruin the harmony of the stock motor and guess what happens $$$$. That's why I leave mine stock and love it. :thumb
  6. Solarbronco

    Solarbronco Been here awhile

    Joined:
    Jun 5, 2012
    Oddometer:
    697
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    Boise, Idaho
    Yeah, I dont get into all the "must do" mods either. No matter what ya do, the DRZ will always be heavy as hell. 3x3 mod will just make your airfilter dirty as hell really quick. FCR carb will give a lil power, but mostly cost alot AND ruin your MPG. I changed tires, added a thick skid plate, added a DRC rear tail light. Removed the blinkers and mirrors and ride the piss out of my 2012 every chance I get.

    I bought a DRZ because I didn't wwant to have to waste all my time working on my bike, and DRZ's flat out last if ya change the oil and filters.
  7. ol'dan

    ol'dan n00b

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    Mar 9, 2012
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    Location:
    The dry side of WA
    I'm just taking some time during the winter to do some preventative maintenance. Things like greasing bearings, changing oil, clean the air filter and lube the chain. I choose not to run the bike into the ground and then take it 40 miles into the back country. I replace the battery at the first sign of starting problems and fix anything that is not working properly ASAP. I'd rather spend my time riding than walking home.
  8. mars

    mars Starbucks anyone?

    Joined:
    Jun 6, 2002
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    2,037
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    El Reno,ok
    I recently bought a nearly new 2012 DRZ400 that runs and handles great. I am moving from a KTM 640 adventure. This bike is hands down better for just about everything except, the 640 would cruise at 90 all day if you wanted The DRZ seems to do the same minus 10 or 15 mph, that makes it the perfect bike for me.
    first up was to mount my Zega bags. I scored the SW Mototech mounts and so far I love them.
    [​IMG]
    [​IMG]
    I started to inspect the bike, starting with the front wheel. I read about the lack of grease in the steering head. Turns out it was bone dry on the bottom bearing.
    [​IMG]
    not one speck of grease.
    I noticed a rather crude bend in the front down tube and thought this must be the final tweek to get the geometry right.
    [​IMG]
    the paint looks un touched and the stickers look good so I guess this was a factory adjustment.
    After getting the front end back together I started to look at rejetting the carb. Once started I found the clamps holding the carb to be completely loose and finally removed it after some wiggling and loosening of the rear sub frame. Waiting for a jetting kit now and next up will be the swing arm. I expect it to be in the same condition as the steering head.
  9. SKINZ

    SKINZ Geo Steve

    Joined:
    Sep 3, 2012
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    Calgary, AB
    Any chance you have the petcock on "prime" and not "on" and are just flooding it?
  10. Jeathrow Bowdean

    Jeathrow Bowdean Been here awhile

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    Western Canada Dream
    I hope that you folks are keeping an eye on the DR 790cc build. Part 1 did not work that well, but Procycle is fixing things up for part 2.

    It's the best show in town this year.

    From Jeathrow Bowdean in Western Canada. PS: Who knows, this could save your motor project some day !!!
  11. Jeathrow Bowdean

    Jeathrow Bowdean Been here awhile

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    I'll look at my tube Mars, but I'm sure that this is not a factory thing. I'm wondering if it's from shipping or when the dealer put it together thing. I hope the tube in not dinted to bad. They are pretty tuff in that spot !!!
  12. mars

    mars Starbucks anyone?

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    the thing runs and handles great, it has me puzzled too.
  13. mars

    mars Starbucks anyone?

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    there are some other posts from other threads that talk about this. it seems to be normal.
  14. Jimo368

    Jimo368 intrepid traveller

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    Feb 23, 2011
    Oddometer:
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    Location:
    Northwestern Ontario
    Mars, I came close to buying a 640A before getting the DRZ. Haven't ridden it yet and now wondering how the KTM would be?
  15. DR650SEDDY

    DR650SEDDY ride2discover

    Joined:
    May 31, 2007
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    I had similar problem while back. Before i started to dig into the engine/carb repertoire i took off the gas tank cleaned well with soap & water rinse well with water only, let it dry till next day and before reinstall it blow air into it from powerfull compressor. I took few minutes to double check the petcock (remove & inspect). I filled it half way, added carb cleaner to it. It started right up, and idled like new bike. I still have to use the choke to start it no matter what though (cold or hot weather).
  16. XJHero

    XJHero Adventurer

    Joined:
    Feb 24, 2013
    Oddometer:
    12
    Yes actually, i didnt realize that this was a prime position, thought it was a reserve, and my tank only has a gallon or so in it. Didnt think it mattered...on that note, what exactly is the prime for and how do you use it properly?...And if thats the case, would def explain why it flooded. On that note, how would I go about clearing a flood out of this style engine...im more used to kick bikes(WOT, open choke, kick it a few times), unless ive been doing that wrong too...seemed to work on my XRs no prob.

    Quote"I had similar problem while back. Before i started to dig into the engine/carb repertoire i took off the gas tank cleaned well with soap & water rinse well with water only, let it dry till next day and before reinstall it blow air into it from powerfull compressor. I took few minutes to double check the petcock (remove & inspect). I filled it half way, added carb cleaner to it. It started right up, and idled like new bike. I still have to use the choke to start it no matter what though (cold or hot weather). " Quote.

    I actually heard almost the same thing from someone else yesturday, except they did that with the carb and tank, same results....looks like Ill just start with the tank and gas, after clearing the CC and making sure theres no gas in there or my oil.
    Thanks a lot guys, appreciate the advice.
  17. ohgood

    ohgood Just givver tha berries !!!

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    ya, i'm wondering if he posted in the wrong thread... the dr790 (drbig) is a couple slots down...

    but i want one :D
  18. DualSportDad

    DualSportDad Long timer

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    Is your bike a Cali version? I didn't think the klxr had a prime position on the petcock?

    If its flooded I wouldnt start it. Replace the o ring in the seat Assembly and change the oil before you start it.

    Sent from my Galaxy Note 2 using tapatalk 2
  19. mars

    mars Starbucks anyone?

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    I think the DRZ is better. I rallied my 640 in the Mount Hood Rally twice and never really got to stretch it's legs much over 70 mph.
    [​IMG]
    Bikes staged for the Mount Hood Rally
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    Leaving one of the timed stages
    [​IMG]
    layered for a frigid morning start

    I did leave Mountain Home Idaho with a desire to ride in anger once. I made it to Jarbidge Nevada in a little under 90 minutes. Total of 118 miles. I was completely off road all the way and just in the mood for speed. The bike would do 110 tucked in and 90 to 95 standing. I spent most of the trip standing because of road conditions. That's about the only time I would put the 640 over the DRZ.

    I was able to get some help with the 640 suspension by some of the Dakar folks at the Dakar Rally Experience. Kellon Walch let me ride his factory Dakar bike and that gave me a bench mark for the suspension. I was able to get the 640 close to that with some drastic suspension changes. I took the DRZ out last weekend on some deep gravel and big wash board surfaces. It did great, I have been afraid to touch the suspension. compression was at 12 clicks and the rebound was a 16.

    Personally I would have done better with the DRZ in a rally but I haven't ridden it with lots of gas too. I think one of the problems with the 640 was gas sloshing around in that big tank and it was real heavy if full. Looking back, tank foam is the answer and I will do that to the DRZ when my new 3.9 gallon tank arrives.

    Planning to ride the Oklahoma Adventure Route this year and hopefully a trip to Mexico later in the year.

    I did like the large road book on the 640 as a factory option. Easy to install and worked great.
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    Nevada Rally Experience roadbook.
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    It had a neat glow at night too.

    To sum it up, 640 was slow out of the box without considerable de restricting, it was heavy, later bikes just had the 990 suspension slapped on and needed considerable tweaking. good points: very fast after de restricting that included a new muffler, suspension was good and not great after new springs and steering head with damper, handling was slow (this was good at speed), ergonomics were great (I could stand all day on that bike) it was dependable and great range.
    [​IMG]

    [​IMG]
    liviing in Idaho is great too. Lots of good memories, I feel kind of ship wrecked in OKC now.
    [​IMG]
    [​IMG]
    I can't wait to get this guy out for a trip.
  20. mars

    mars Starbucks anyone?

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