Solving Automotive Performance Issues
Fuel filters are maintenance items. If you have a performance problem and you suspect a problem with fuel pressure, go ahead and replace the fuel filter, especially if the filter hasn’t been replaced in a while.
Newer vehicles don’t use replaceable fuel filters. They often just use a screen in the tank and that’s about it. So if you have a fuel pressure problem on one of these vehicles, look to the pump or some other part of the fuel system for the cause. I know not having a replaceable fuel filter sucks, but I believe they started doing this to keep maintenance cost and manufacturing costs down. That does nothing to help you if you put in dirty fuel, though. If I suspect dirty fuel on one of these systems, I disconnect the supply line and run it into a container and cycle the key. This will run the pump for a few seconds and give me a sample of fuel. If it looks cloudy or dirty, remove the fuel pump from the tank and inspect the fuel inside of it. If you see a lot of sediment, drain and flush the fuel tank, fill it up with fresh fuel, and recheck for your performance problem.
I can also group Toyota fuel pumps into this part of the article. If you suspect a fuel pump problem with your Honda, please verify that you have power and ground to the fuel pump first before you replace it. If you don’t have power and ground at the fuel pump and you don’t have fuel pressure, the fuel pump is not your problem.
I mention this because a lot of people replace the fuel pump in a Honda and still have a problem. The truth is, Honda fuel pumps rarely go bad. In the 20 years I’ve been working on Hondas, I’ve replaced about four fuel pumps, and two of those were aftermarket. I’m not saying Honda fuel pumps are bulletproof, but they pretty much are. Hondas do have all kinds of problems with main relays, which supply the fuel pump with power. They also have issues with ignition switches going bad and not supplying power to the fuel pump or ignition system. My point is, if you have a fuel delivery problem on a Honda, don’t replace the fuel pump first thing; check to see if the pump is getting power and ground first. Don’t waste your time and money on a Honda fuel pump, especially if you’re going to install an aftermarket unit. This is a step backward. If you do have a problem with a main relay you can often repair it. I show how in this video. Don’t beat me up too much over my solder technique. I’ve heard plenty about it already.
This is overlooked so often it’s just silly. Especially on modern vehicles, the tendency seems to be to go after the electronics as the cause of a performance problem. Under all those electronics is an internal combustion engine of the same type we’ve been making since the 1930s. Check for a mechanical issue first thing if you don’t have any codes stored. An engine needs to breathe. It also needs to get rid of its waste. Suck, squeeze, bang, blow: These are the steps in the combustion process. A breakdown with any link in that chain, and you get a performance problem. Listed below are a few ways to check the mechanical integrity of your engine. Don’t forget about these if your vehicle has a performance problem.
It’s critical that your engine be in time in order to run properly. I’m speaking first here about the mechanical timing of the engine, but you also need to make sure your ignition timing is correct for your engine to perform properly. More than one person has come to me stating that they had replaced just about every part on the engine and they still have a performance problem. Then I ask, “Did you check the mechanical timing of the engine?” I’m often met with, “No, but I will.” After they come back, they report that either the timing had jumped a tooth (if it was a timing belt) or there was some other issue that caused the timing to be off.
Everything about engine operation has its time. If the mechanical timing of the engine is off, everything is off. The ignition timing, the injector timing, all the electrical systems: All of it suffers if the engine is not in time. So if you have a performance issue, check to see if the engine is in time mechanically before you start buying parts, especially if you have a code for a cam or crank sensor. These codes can also be set if the engine timing is off, not just because of a sensor issue. Once again, just because you have a code for something, that doesn’t mean you can start replacing parts. Verify those parts are bad first, and in the case of cam and crank sensors, check the mechanical timing of the engine before you start replacing sensors.
Video Title: Solving Automotive Idle Problems – EricTheCarGuy Video Description: In this Article, Solving Automotive Performance Issues, Eric looks at what can be the cause of Solving Automotive Performance Issues with your vehicle .Thumbnail: http://www.ericthecarguy.com/images/faq_buttons/Large_FAQ_Images/Performance-and-Driveability-icon-large.png