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Underbody braces, turbos and more!

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PostPosted: Wed Mar 30, 2005 12:25 pm 
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Joined: Sat Jul 03, 2004 2:21 pm
Posts: 148
Location: Bangalore
Whats basiclly been done is open up the fuel float take out the stock pump. And replace it with a pump from the MPFI version. It bolts right in.
ANd give 55 PSI.
The doubt I had was this pump is straining my electricals.
There are these two wires coming off the carb. That could be that when the float in the carb is full it shuts off the fuel pump.
Is this true.
Then that means that when the bowl is full my high amp pump will be shut off and I dont have to worry about it runing all the time.
Can somebody confirm this.
Car is a old carbed 1.3 Ltr 4 cylinder 8 valve Esteem.

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PostPosted: Wed Mar 30, 2005 7:39 pm 
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Location: Courtenay, BC
The two wires are possibly for the fuel shut-off solenoid which kills the flow of fuel when the ignition is turned off to prevent engine run-on. Most carburetors made from the late 70's on seem to have this feature.

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PostPosted: Fri Apr 01, 2005 3:34 am 
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Joined: Sat Jul 03, 2004 2:21 pm
Posts: 148
Location: Bangalore
THe fuel pump on my V-Four Honda / carbed pumps fuel but the minute the float bowl is full it stops pumping.
Is the MPFI fuel pump now on my car works the same way or is it spining all the time and just routing fuel back thru the return line.

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PostPosted: Fri Apr 01, 2005 11:00 am 
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Location: London, ON
The pump stays on, the extra fuel gets sent back to the tank by the regulator.


Chris

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PostPosted: Tue Apr 12, 2005 10:37 am 
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Joined: Tue Jul 20, 2004 7:17 pm
Posts: 3566
Location: Georgetown, Guyana
chinoy wrote:
Whats basiclly been done is open up the fuel float take out the stock pump. And replace it with a pump from the MPFI version. It bolts right in.
ANd give 55 PSI.
The doubt I had was this pump is straining my electricals.
There are these two wires coming off the carb. That could be that when the float in the carb is full it shuts off the fuel pump.
Is this true.
Then that means that when the bowl is full my high amp pump will be shut off and I dont have to worry about it runing all the time.
Can somebody confirm this.
Car is a old carbed 1.3 Ltr 4 cylinder 8 valve Esteem.


Assuming a 5 speed, one wire is for the choke - there is a heater circuit, and the second is for the fuel cut solenoid, described above by gphughes1 - automatic transmission cars will also have a throttle position sensor to provide a tps signal to the transmission control.


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