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View Full Version : How do I tell if my Holly is a 4010 or 4160?


kah68
06-09-2007, 08:27 PM
Does anyone have pics or casting or I.D. numbers to tell which Holley carb I have?

TMCNo1
06-09-2007, 09:30 PM
4010 has a gas line that splits and one line goes to the front bowl and the other to the back bowl on the starboard side 0f the carb.
4160 has one gas line that goes to the front of the carb on the port front side of the carb.
Why don't you show us a pic of the carb you have!

kah68
06-10-2007, 08:12 AM
I will try to take some pics this week, If not I must have the 4160 because it has one fuel line on the port side.

theDano
06-10-2007, 11:13 AM
Like Mr. TMC#1 said.....Open your engine cover, stand and face the back of the boat, look at the carb and on the left there will be 2 fuel lines coming out of the carb which will be on your left but will be the starboard side of the boat.

2 lines = 4010

1 line = 4160

Also, If you experience vapor locking (starting engine after being off for 20+ minutes and engine not being able to idle correctly) when trying to pull skiers or not maintaining idle at all where you have to feather the throttle constantly until finally fresh cool gas arrives, then you have a 4010 my friend.....welcome to the club ;)

kah68
06-10-2007, 04:53 PM
Must be the 4160, one fuel line on the port side front. Won't idle properly, looks like it might need to be rebuilt.

Willski
06-11-2007, 12:28 AM
If you want to check your list # (for ordering parts or carb ID) check out this pic.

jclose8
06-11-2007, 09:59 AM
Usually, the easiest way to tell is to not even open the engine cover. Take it for a test drive. If the boat runs right, it is probably a 4160. If it doesn't start, or runs rough, you probably have a 4010.:)

kah68
06-11-2007, 10:29 AM
Usually, the easiest way to tell is to not even open the engine cover. Take it for a test drive. If the boat runs right, it is probably a 4160. If it doesn't start, or runs rough, you probably have a 4010.:)

Well if it is as described above I have a 4160 that idles like crap, so I guess in needs a rebuild.

TMCNo1
06-11-2007, 12:40 PM
Well if it is as described above I have a 4160 that idles like crap, so I guess in needs a rebuild.
Have you tried adjusting the idle air mixture screws on both sides of the plate just behind the front bowls. If you haven't, $1 says, if you do adjust them it will smooth out, then set idle speed screw near where the throttle cable attaches to 900 rpm in neutral and 600 rpm in gear.

kah68
06-11-2007, 07:44 PM
If the screws you are talking about are near the front bowl then yes I have and it doesn't seem to make a differance. Just so I have it right, if I turn them all the way in the engine should start to stumble. Turning them out till it smooths out is the way to set them up. Is this correct? If so there is something wrong becuase it doesn't work.

Kirk

Hunterb
06-13-2007, 01:37 PM
That is correct, if you screw the idle mixture screws all the way in the motor should stall. The starting point for them is to screw them all the way in until they are seated (be very careful as they will be damaged if you screw them in too much) and then back them off 1 1/2 turns. You can then make small adjustments from that point. If it requires large adjustments to make a difference, or it won't stall when they are screwed in, then you have other problems. A refresh kit is quite cheap and fairly easy to put in.

Here's a good step by step procedure for refreshing a Holley 6140.

Good luck

http://www.fordmuscle.com/archives/1999/12/holley/index.php

Bruce