Fuel injector upgrade
done very well ! 
Le Mans Master
Joined: Jan 2000
Posts: 5,072
Likes: 1,557
From: Poway CA
2025 C1 of the Year - Unmodified Finalist
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Just kicking this great 8 year old thread.. I removed the injectors on my 98 tonight. They are original (80K miles), and I've had 2 become leaky over the past few months. A few extra bits of helpful info:
- To drain as much gas as possible out of the rail, I started the motor and pulled the fuel pump fuse. Motor runs about 5 seconds and dies.. Even doing this there is still A LOT of fuel in the rail - I would guess 1/2 cup or so. Beware of that in all steps.
- Like the sparkplugs, getting the lead off injector #7 is tuff! After wrestling on it for about 10 minutes, I decided to unbolt the rail first. Once I could nudge it forward a bit, the lead came off very easy. Take care not to loose the little blue seals in the electrical plug - I had one fly out.
- I was able to buy a fuel line tool (as shown above) at Autozone for $9.
- It was a breezy 1 hour project to get the injectors off. Not bad at all.
After browsing new injectors (prices range from $40 up to $150 per injector) and reading up, I decided to send my old injectors off to a shop that will clean and test them... for $11 each. I feel like it's better to have refurbed original injectors than new cheap ones... I'll report back when my injectors come back from the shop and I get them installed.
Fred
- To drain as much gas as possible out of the rail, I started the motor and pulled the fuel pump fuse. Motor runs about 5 seconds and dies.. Even doing this there is still A LOT of fuel in the rail - I would guess 1/2 cup or so. Beware of that in all steps.
- Like the sparkplugs, getting the lead off injector #7 is tuff! After wrestling on it for about 10 minutes, I decided to unbolt the rail first. Once I could nudge it forward a bit, the lead came off very easy. Take care not to loose the little blue seals in the electrical plug - I had one fly out.
- I was able to buy a fuel line tool (as shown above) at Autozone for $9.
- It was a breezy 1 hour project to get the injectors off. Not bad at all.
After browsing new injectors (prices range from $40 up to $150 per injector) and reading up, I decided to send my old injectors off to a shop that will clean and test them... for $11 each. I feel like it's better to have refurbed original injectors than new cheap ones... I'll report back when my injectors come back from the shop and I get them installed.
Fred
Last edited by SDVette; May 23, 2017 at 03:10 AM.
Le Mans Master
Joined: Jan 2000
Posts: 5,072
Likes: 1,557
From: Poway CA
2025 C1 of the Year - Unmodified Finalist
2024 C1 of the Year Finalist - Unmodified
2023 C1 of the Year Finalist - Unmodified
2022 C1 of the Year Finalist - Unmodified
2019 C1 of Year Finalist (stock)
2019 C1 of Year Finalist (stock)
2016 C1 of Year Finalist
Injectors came back.. tested (with test results) and new o-rings and micro-filters (old ones returned). Installed them in the car today and everything is running fine.
The only tweak to the re-assembly instructions at the top would be: Connect the wires to the rear injectors BEFORE you seat the rail assembly.. Much easier to attach the connectors with more room to work.
The only tweak to the re-assembly instructions at the top would be: Connect the wires to the rear injectors BEFORE you seat the rail assembly.. Much easier to attach the connectors with more room to work.
