Should I replace my intake manifold if it looks like this? - Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum
 20Likes
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 15 (permalink) Old 09-09-2019, 04:06 PM Thread Starter
Junior Member
 
Join Date: Sep 2019
Posts: 7
Question Should I replace my intake manifold if it looks like this?

Hi there all. first time poster. I have had my XVS 650 for about 3 months now. Loving it so far. A mechanic told me that I might have some trouble down the line with my intake manifold. I haven't really notice a difference in performance since I got it. It was somewhat neglected by the previous owner. Is there any way I can check if I truly needs replacing? It looks like this.

Keith Post likes this.

Last edited by bevo1981; 09-09-2019 at 06:10 PM.
Boeing is offline  
Sponsored Links
Advertisement
 
post #2 of 15 (permalink) Old 09-09-2019, 06:10 PM
KCW
Senior Member
 
Join Date: Sep 2016
Posts: 5,081
Garage
they tend to get surface cracks in the plastic, but usually the cracks do not go all the way thru and create a vacuum leak.

If you have a propane torch take the bike for a ride and warm it up for a few miles, then park it idling in neutral, turn the gas knob on for the torch but do not light it - point the propane flow at the carb boots.

If the idle changes (speeds up) then you have a vacuum leak and they need to be replaced.

You can also use brake cleaner or wd 40 if you dont have a propane torch.

this comes up a lot, people see the surface cracks, freak out, and replace them.

you can also take a look at the spark plugs, if you have a vacuum leak it will be running lean, and the plugs will look white and burned.

Last edited by KCW; 09-09-2019 at 06:13 PM.
KCW is offline  
post #3 of 15 (permalink) Old 09-09-2019, 07:33 PM
Moderator
 
lesblank's Avatar
 
Join Date: Jan 2014
Location: Houston, Texas
Posts: 3,996
Garage
Welcome from Houston, Texas. KCW is correct on usually not being a problem with cracks on intake. The intake is multiple layers thick and normally only outer layer which cracks. Here's a few interesting threads to check out when you get a chance.

https://www.starbikeforums.com/forum...on-garage.html

https://www.starbikeforums.com/forum...ighlight=Yammy

https://www.starbikeforums.com/forum...where-you.html

https://www.starbikeforums.com/forum...enced-you.html

https://www.starbikeforums.com/forum...ature-you.html

Ride often and safe.
Keith Post likes this.

2001 Vstar 1100 Classic (sold), Cobra Slash Cut full exhaust, Dropped 1 inch with lowering links, ORK, 4.5 inch handlebar risers, Ultimate passenger seat, Passenger pegs moved forward 4 inches, Handlebar clock, KN air filter, Viking saddlebags, Additional rear lighting
Loose nut "me" behind the bars
2006 Harley Electra Glide Ultra Classic

https://sites.google.com/site/vstar1100kb/home
lesblank is online now  
Sponsored Links
Advertisement
 
post #4 of 15 (permalink) Old 09-09-2019, 08:09 PM
Moderator
 
Keith Post's Avatar
 
Join Date: Jul 2013
Posts: 5,795
Garage
Hi and welcome!
I had a 650 before I got my 950 and it had those same cracks, but like les and KCW said, the outside is plastic. Wed love to see some pics of the whole bike, and were glad you joined us!


Sent from my iPhone using Tapatalk
Deeksvstarclassic likes this.
Keith Post is online now  
post #5 of 15 (permalink) Old 09-09-2019, 08:39 PM
Senior Member
 
Yamaha Pat's Avatar
 
Join Date: May 2018
Location: Sacramento, Ca.
Posts: 1,165
Welcome from Sacramento, Ca.
Keith Post likes this.

Riding is not just what I do but who I am.

Cherry 2007 650 Classic
The Strat 2010 Stratoliner Deluxe
Yamaha Pat is online now  
post #6 of 15 (permalink) Old 09-09-2019, 10:51 PM
Senior Member
 
NorthernRider's Avatar
 
Join Date: Nov 2016
Location: New Brunswick, Canada
Posts: 2,033
Garage
Welcome from Atlantic Canada.
Keith Post likes this.

Paul
2007 Vulcan Nomad
V&H exhaust

2000 V Star 1100 Classic (Sold)
All stock except for:
Kuryakyn Grips
4" Risers
Switchblade Quick Release Windshield
Ugly but somewhat functional saddlebags
NorthernRider is online now  
post #7 of 15 (permalink) Old 09-10-2019, 01:33 AM Thread Starter
Junior Member
 
Join Date: Sep 2019
Posts: 7
Thanks for the advice and welcome messages! I will get out today and spray some wd40 on the cracks and see if there are any changes in idle speed.
Greetings back from Amsterdam, the Netherlands!
And here's a pic of my beaut as requested. I'm not mechanically inclined but I've been practicing on her. Changed the lens covers, brake lever handle, added a battery tender quick connector and been polishing her up pretty much everyday after each ride.
An oil change is in order but I'm just unable the get the drain bolt loosened with my spanner.
Attached Thumbnails
Click image for larger version

Name:	98F2CF3B-E46A-4010-B126-87C9634EE7A8_1568096872529.jpg
Views:	18
Size:	19.6 KB
ID:	85226   Click image for larger version

Name:	D41A58ED-BAEB-456B-95E3-2E4D3791F0EB_1568097137691.jpg
Views:	19
Size:	20.1 KB
ID:	85228   Click image for larger version

Name:	5043E19A-9770-46D0-84FC-B66AD5919F79_1568097189228.jpg
Views:	16
Size:	20.1 KB
ID:	85230  
Keith Post and JonMaz2112 like this.
Boeing is offline  
post #8 of 15 (permalink) Old 09-10-2019, 07:58 AM
Senior Member
 
Redbird58's Avatar
 
Join Date: Feb 2019
Location: Columbus, OH
Posts: 324
Garage
Welcome from Columbus, OH! Many, many 650 riders here who will be able to assist with your questions. Buckle up as a ton of information is coming your way. When you find out if you have a leak you will find many helpful people who will help you further diagnose and repair your machine. Good luck!
Keith Post and JonMaz2112 like this.

09 V Star 950

Be seen and be heard! Bright lights and loud pipes!

Enjoy the ride
Redbird58 is offline  
post #9 of 15 (permalink) Old 09-10-2019, 08:18 AM
Moderator
 
Keith Post's Avatar
 
Join Date: Jul 2013
Posts: 5,795
Garage
Very nice!


Sent from my iPhone using Tapatalk
Keith Post is online now  
post #10 of 15 (permalink) Old 09-10-2019, 08:37 AM
KCW
Senior Member
 
Join Date: Sep 2016
Posts: 5,081
Garage
If you have limited experience a couple of really important things right up front:

1 if you dont have a torque wrench then do not work on the bike (ie change the oil) until you get one. Its unbelievably easy to strip out the oil drain plug, the spark plug threads in the heads, the little bolts that hold the oil filter cover in... and it will cause you incredible grief if you strip any of them.

2 the factory service manual for the 650 is available online from a couple websites as a free PDF download

3 if you are thinking of changing those intake boots, even just because they look bad, then wait till you do the next valve adjustment. You will have to strip the tank, intake box, and carbs off the bike for both, and it takes about 2 hours the first time you do it.

To get the oil drain plug off you can get a 6 or 12 point 3/8" drive socket on it, just barely, and then an extension to put a ratchet wrench on it. Put the wrench on and hold it tight counter clockwise, then tap the wrench with a hammer to shock/break the plug loose. As soon as you get one turn off you have to remove the socket, because it almost immediately starts to hit the frame when you unscrew it. You can also get it loose with a box wrench, but you will need the right size socket to torque it back on with your nice brand new torque wrench.

In general if you have a bolt or nut that is tight its better to tap the wrench than to try to brute force torque it off - tapping the wrench acts like an impact wrench, and is less likely to bugger up the threads.
Keith Post and JonMaz2112 like this.

Last edited by KCW; 09-10-2019 at 08:39 AM.
KCW is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Star Motorcycle Forums: Star Raider, V-Max, V-Star, Road-Star Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome