Here's a quick and simple how to video on how to install an injector rebuild kit, or an injector service kit as they are sometimes called.

Fuel injectors are an important part of your car, but after several years of service the amount of fuel and spray patterns get compromised. Luckily injector rebuild kits are readily available, are inexpensive and you can install them yourself easily.

I got mine for $ 17 and it contained everything I needed for the 4 fuel injectors from my 4AGE 16V engine in my 1987 Toyota MR2 mk1 (aw11).

Here's what comes in the kit:
4x pintle caps
4x upper rail spacers
4x lower grommets (also called insulators, or dampers)
4x high-flow micro filters

The o-rings, rail spacers and dampers are easily replaced by hand. The pintle caps need a bit of heating up and the micro filters are replaced by putting a screw into a vice. All in all a 15 minute job that will make your fuel injectors firing like new.

Conventional injectors, unlike modern versions found in direct injection gasoline and diesel engines, very rarely fail. So don't replace them unless you are 100% sure they need to be replaced. A rebuild kit and/or professional cleaning will get them working like new in no time at all.

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