As older cars running electronic fuel injection continue to age, these types of problems are going to occur more often and diagnosis is going to become more tricky than before.

This is not going to be a big lesson on electronic theory, but I thought a lot of you have been asking about some basic info on resistors, caps and diodes, like “what does a diode do?”
So I thought a quick look at these might help you feel a little more comfortable when dealing with them.

Now that your engine is idling smoothly, you can activate the idle control system. The idle control system can now be adjusted to take up any slack caused by headlights and other loads that the fuel and ignition torque ramp cannot completely control.

So here is what you can do BEFORE taking your car with programmable electronic fuel injection to be dyno tuned.

If you imagine a huge fuel pump. It pumps a huge volume of fuel. That fuel travels along a fuel line, some of it is used by the fuel injectors, and then it comes to the fuel pressure regulator. The only problem is that the fittings and internal galleries on this fuel pressure regulator are much smaller than the fuel line and fuel rail, and so the regulator cannot regulate the fuel pressure down to where it needs to be.

So, what is the best way to make sure your vehicle is as hassle free as possible, while you still reap the benefits of using LPG?

We did an installation for a customer running dual fuel (petrol and LPG), plus he wanted to run two boost levels. He wanted two switches on the dash to achieve these actions. One to switch between the two fuels, and the other to switch between high boost and low boost.
We sourced two switches that looked very similar to the original switches in the vehicle. Which by itself would have probably been good enough for the customer. But..

Most standard ignition systems are of the inductive type. These ignition systems can generally handle up to 15PSI of boost pressure, sometimes a little more, sometimes a little less. Gapping plugs down is not the best answer by any stretch of the imagination. Reduced plug gap can lead to a rough idle and increased fuel consumption.

What can dirty injectors do to your engine?
Cause Idle Problems – misfires at idle, lumpy idle, inconsistent idle speed.

What is the most important thing you think about when modifying your car? Is it power? Is it that you enjoy cruising around on a nice day? Is it that you want to win in your racing class? Whatever it is, it won’t be nearly as good (as much fun) as it could be if [...]