Quote:
Originally Posted by JesLet
So you are suggesting that it is better to have the wires soldered? I have my Walbro wires crimped with supplied hardwares, I also used a minimal amount of electrical tape and tied them with zip ties.
Should I disassemble it and solder or leave it since the car is running fine--- Kinda ( please read more on the bottom ).
As stated from above, the car is running fine but most of the time, there's a difference.
At a stop, when I pressed the accelarator at a full throttle, the car runs fast on first gear and once it switches to second gear it is running rich. It is like the fuel lines are rich in fuel.
Also, when I get gas and fill it up and start it, the car dies. I started it again and give it some gas and it will be fine. I just change the fuel pump with Walbro 255. What could be wrong?
Can someone please answer the 2 questions above. This car is a stock 92 SC400.
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Well, the problem we worry about with crimped connections is if it is not done correctly - I suppose the same goes for soldered connections, but either way - if not done well and something comes apart, that air gap could provide a spark - enough to ignite the fuel vapor in the fuel tank... Soldered wires are typically more foolproof and harder to vibrate apart than a standard crimp connection...
As far as why it's running bad, well, lots of things could cause your issue, but one of the potential issues is that the pump is overflowing the demand for fuel once high voltage is applied to it, thus overrunning the ability of the fuel pressure regulator and fuel return line, causing excess pressure in the fuel rail, causing the injectors to flow more than the ecu thinks they are flowing, causing a rich run condition... the only way to tell for sure is to watch fuel pressure as you drive...