Fuel injectors

[paulwatkins]

Can fuel injectors be reconditioned?
Is it something I could do myself? Or is there somewhere that someone could recommend i send them?

Any info greatly appreciated.
Paul

[paulwatkins]

I've found a reputable company in Keynsham, nr Bristol who specialise in fuel injectors - Tom Day Ltd.
They use a ASNU test rig to determine the original condition. Then they service the injectors and give them an ultrasonic clean before returning them to the test rig to determine the improved flow condition. The injectors are returned with new o-rings for re-fitting onto the fuel rail.

They charge £15 +VAT per injector. Which was very good, and I'll save on p+p.

Certainly worth a try before forking out the £110 +VAT I have been quoted for new ones!

Paul

[Doug]

sounds like you are going in the right direction

[paulwatkins]

Just received the injectors back.
The flow rates (after servicing) were 85 - 87 - 84 - 85.

Not entirely happy with the result on the no2 injector, so I will replace it. Stevieshag, I'll be pm'ing you about this mate.

[paulwatkins]

I've just had some spare injectors tested and they have found 3 suitable replacements for the dodgy no2 injector - many thanks to stevieshag!

As an aside, the engineer recommended having the injectors cleaned and serviced every 60 to 70k miles. Maybe its something for soem of you to consider doing.

Regards, Paul

[kmckmc]

What is the MAKE of these fuel injector? What model number? Are there substitute? What are Elan M100 fuel injector's specification?

Cheers,

[Doc Fizzix]

What is the MAKE of these fuel injector? What model number? Are there substitute? What are Elan M100 fuel injector's specification?

They are a very standard GM injector. Upgrades and replacments are very avalible and easy to get. There was already been a ton of discussion on this, I hope the discussion have not dropped off the site like other information

Here is a start:

http://www.lotuselancentral.com/upgrade ... orswap.htm


Here is a great source for replacement and upgrades: http://www.rceng.com/

Here is another source other than RC: http://www.tomco-inc.com/

[nitroman]

Rock Auto let me down. I ordered four reconditioned fuel injectors (FI, henceforth) online and they called me back six hours later to say their rebuilder was out of stock!

I searched some and found Lotus Elan OE-spec reconditioned injectors here http://www.fuelinjectorwhse.com/injectors.php?id=MP3082 (Yes, these are our exact FI units) for $40 a pop. You can even send in your old FIs and get $10 back for each one, but I'll keep mine as spares. The resistance on one of my originals had gone off the ohm scale, causing the other FI on that circuit (FIs 2 & 4) to go offline as well, so I was a 2-cylinder man. A temp bodge is to run a direct wire across the FI harness-plug, electrically bypassing the bad FI, which will allow the "companion" FI to fire properly (IE, still receive an ECU signal). Then you'll have a mighty 3-cylinder! It seems pretty sweet when you've been running on two!!!

Anyway, the place in the link above is the actual rebuilder, and guarantee that their injectors all "squirt" within 5% of each other at the very worst. As they have the FI stock just sitting by their bed-side they can physically count how many they have awaiting your inquire. 23 were collecting dust when I called. They delivered them to me in an astounding single-day, and that was REGULAR ground shipping!

A great place to deal with if you live in the USA.

[norman lovie]

I just got my ones back from a place in UK "classics" 07771885350
they ranged from 89 to 92 @70% duty as delivered and returned a steady 92 after strip clean and new folters fitted

[RichardK]

Had my injectors cleaned and tested at a local specialist in Capetown where the car lives. Although in total the car has only done 28k miles there was a significant variation in spray pattern (ranged from acceptable to bad) and volume, after cleaning several times in the ultrasonic bath the volumes came into line and the spray patterns to even my untrained eye were vastly improved.

It has made a significant difference to the engine running- much much smoother and to my perception the power pick up.

It did not make a difference to my misfire at 4000 rpm ...... that was only solved after I changed the spark plugs !