Is the XR250R a hard start bike?

Be sure to check your bike specs and adjust accordingly. yup even on the old vintage XL’s – if they are outta spec – hard start.

Why is my 1975 XL350 hard to start?

I started my 1975 XL350, which had been sitting since last summer, on 3 kicks! drained the old gas outta the carb first and fired right up. That is one sweet running XL350 and talk about torque, man that thing is a stump puller! Could this also cause it to foul a plug and p!ss me off to the moon?!?!

Why does it take so long to start a 300K engine?

Sure why not. On high mileage engines (200k to 300k) the pistons ring can wear causing low compression which increases crank time and causes hard starting. This is because the compression ratio is low and it takes time for the engine to gain enough speed cranking by the starter to ignite the fuel air mixture.

What causes a car to have a hard start?

This guide will help by starting with simple fixes and conclude with the more difficult. What goes wrong? Normal wear and usage can cause a hard start condition due to lack of fuel pressure, poor intake air management, false readings to the car’s computer or weak spark.

What kind of engine does an XR250R have?

Both engines are SOHC 4 valve heads. (72 XL250 and XR250) My XR250R will smoke my XL250 and I think the 350 too! Thats funny, my vintage 250 is almost as fast as my XR400, which is punched out to a 440 with a Mikuni pumper. Also my vintage bike will start first or second kick always.

What should I do about my XR hard start?

Give it 15 to 20 minutes, then switch sides…15 to 20 more minutes or so should do it. Engine is PRE-WARMED and fires nicely. Also I have found that when stopping, by turning the gas off just before hitting the kill switch, it makes for much easier re-start. Hope this helps….

Can you change the exhaust on an XR250R?

Modifications The XR250R comes pretty choked up from the factory. You can easily modify the intake and exhaust to get more performance. Exhaust baffle Remove the exhaust baffle or purchase a less restrictive exhaust baffle. There are two exhaust baffle designs – A1 and A2 (stamped on outside of end tip).

How can I Make my XR250R breathe better?

Modify the airbox by removing the inlet snorkel. Removal of the stock airbox inlet snorkel under the seat will allow your XR to breathe better. Remove the seat and pull upward on the snorkel. Find a picture of the snorkel.

When did XR250R come out 1986 to 2004?

XR250R 1986 – 2004- 12/22/17 version With MAR’s kind permission, I have made this web page based on his brilliant collection of XR250R information. I will add pictures and other information as soon as I can. Much of the information applies to all years 1986 to 2004. Where information is specific to certain years, it will be so noted.

Where can I find a XR250R carb tutorial?

Here’s the link: XR250R Carburetor Notes Here is a great carb tutorial video post on ThumperTalk.com by Trailryder42. The video shows an XR400R carb, but the XR250R carb is nearly identical. Carb Tutorial video post by Trailryder42

Be sure to check your bike specs and adjust accordingly. yup even on the old vintage XL’s – if they are outta spec – hard start.

What to do if your bike won’t start?

Checking the valves is just normal maintenance. If your bike won’t start because the valves are tight, then your not doing the required maintenance. That said, I just sold my 96 XR400. After 10 years I never had to adjust it more than .001-.002″. Look guys theres alot of good info out there.

What does hard start on a XR mean?

basically what im saying is that there are a number of things that could affect the starting. all of these things should be done to help with the problem. Hard starting is a sign the valves need adjusting. On XR’s it means fix it or get a very strong right leg. On “F” bikes it means fix it or get ready to buy a new head.

Which is easier to start XR or XR400R?

But, as you pointed out your bike is punched out to 440 and runs a Mikuni pumper, bone stock 1972 XL250 vs a 04 XR250R is no contest. the old XL’s do however start easier IF everything is correct, timing, points, valves carburation etc.

What’s the best way to start an XR 400?

When cold, my 400 is a biaotch to start. Sounds like valves all right. If they are adjusted properly it should start easily by doing the following. Don’t touch the throttle. Here is the key that has helped me the most…. Feather the choke down until she runs smoothly, but give it time to warm up before heading out.

Which is faster a vintage 250 or XR400?

Thats funny, my vintage 250 is almost as fast as my XR400, which is punched out to a 440 with a Mikuni pumper. Also my vintage bike will start first or second kick always. When cold, my 400 is a biaotch to start. Sounds like valves all right. If they are adjusted properly it should start easily by doing the following.

What’s the idle RPM on my Chevy Suburban?

My 1997 Chevy Suburban (5.7) is acting up on me. When I start it up the RPM and idle seem fine. As I let it sit for a couple of seconds the RPM’s slowly begin to drop until they finally bottom out at about 1K. As soon as I put it into Reverse/Drive etc. the RPM’s drop below that mark and it struggles to stay running.

When does a car have a rough idle?

November 27, 2017. It’s easy to tell when your car has a rough idle: When you start the engine, it won’t run at a steady rate. It may almost stall, or it may run at varying RPMs without your putting your foot on the gas, or it may do both.

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