Sequential Port Injection?
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Stage II
Joined: Jul 2014
Posts: 2
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From: Florida
Sequential Port Injection?
Hi all. I just inherited a 1997 Road king.
The right side of the engine says Sequential Port Injection. I was assuming this meant that this model was a fuel injected Road King. However when I start the bike it does start right up but takes a bit to warm up before it will idle without stalling. When the bike is warmed up it idles very low like a carbureted bike would do.
I had a 2002 heritage that was without a doubt EFI and cranked right up and idled fast initially and never stalled without it being warmed up. It also idled much faster then this Sequential Port Injected Road King.
I am embarrassed to say I don't know how to tell if this Road King is fuel injected or carburetor model, any insight? It idles like a carburetor but not sure what Sequential Port Injection means, EFI or Carburetor??
Thanks
Mike
The right side of the engine says Sequential Port Injection. I was assuming this meant that this model was a fuel injected Road King. However when I start the bike it does start right up but takes a bit to warm up before it will idle without stalling. When the bike is warmed up it idles very low like a carbureted bike would do.
I had a 2002 heritage that was without a doubt EFI and cranked right up and idled fast initially and never stalled without it being warmed up. It also idled much faster then this Sequential Port Injected Road King.
I am embarrassed to say I don't know how to tell if this Road King is fuel injected or carburetor model, any insight? It idles like a carburetor but not sure what Sequential Port Injection means, EFI or Carburetor??
Thanks
Mike
Outstanding HDF Member
Joined: Nov 2012
Posts: 2,422
Likes: 14
From: Fla
Yes, they can...
Actually, it should idle around 950-1100 RPM. The Magnetti Morrelli injection system had it's problems maintaining consistent idle speed. A fuel management system could help with that, but not absolutely necessary if you are running stock configuration.
Get a service manual and you won't be spending good money for the simple things you can do yourself.
One easy way to tell if you have carb or EFI, look on the left side under the middle/back end of the fuel tank. Are there two fuel lines or just one? Also, is there a **** that you can pull out like a choke? It's actually a fuel enrichment valve, if you have one, but acts like a choke, and most people just call it a choke.
If you have two hoses, and no fuel enrichment ****, or fuel cutoff valve, then it is EFI.
If it has a single hose (actually a single large fuel hose, with a smaller vacuum hose coming out of the back of the valve), with a fuel cutoff valve, and a 'choke' ****, it is carb'd.
Actually, it should idle around 950-1100 RPM. The Magnetti Morrelli injection system had it's problems maintaining consistent idle speed. A fuel management system could help with that, but not absolutely necessary if you are running stock configuration.
Get a service manual and you won't be spending good money for the simple things you can do yourself.
One easy way to tell if you have carb or EFI, look on the left side under the middle/back end of the fuel tank. Are there two fuel lines or just one? Also, is there a **** that you can pull out like a choke? It's actually a fuel enrichment valve, if you have one, but acts like a choke, and most people just call it a choke.
If you have two hoses, and no fuel enrichment ****, or fuel cutoff valve, then it is EFI.
If it has a single hose (actually a single large fuel hose, with a smaller vacuum hose coming out of the back of the valve), with a fuel cutoff valve, and a 'choke' ****, it is carb'd.
Last edited by Def Mute; Jul 28, 2014 at 07:27 PM.
Extreme HDF Member
Joined: Jun 2007
Posts: 12,653
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From: Broken Arrow, Oklahoma
Can we assume you've had it a while and have put fresh gas in it? Also, previous owner may have had engine work done to it, like cams, trying to get that carbed sound. Did you get all the maintenance records with it?
Stellar HDF Member
Joined: Jan 2013
Posts: 3,466
Likes: 425
From: Illinois
Or,the previous owner could have changed it to carburetor.
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Road Master
Joined: Jun 2005
Posts: 1,053
Likes: 39
From: Central Florida
Or someone put a EFI air cleaner cover on a Carb'd bike. Pull off the cover and take a picture of what's underneath and post it here. Should be easy to tell. A big choke **** on the opposite side would be indication as well (Assuming its a Harley Carb).
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Stellar HDF Member
Joined: Jan 2013
Posts: 3,466
Likes: 425
From: Illinois
Yeah-I had a 'Screamin Eagle' carb,[made by keihin] that had an enrichener **** on the top of the carb.Pulled up on it to activate. [Great old carb by the way.Used it on a shovel,then put it on an evo.
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