XJ XJ8 / XJR ( X308 ) 1997 - 2003

Fuel Injectors which to buy?

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Old Jan 8, 2026 | 11:29 PM
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Ant305's Avatar
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Default Fuel Injectors which to buy?

I’m looking to replace the fuel injectors in hopes that it will fix a cylinder 6 misfire that im having but all the injectors I’m finding online seem to be different.
$236 PartsGeek (Genuine) (Singles)
$134PartsGeek (Autoparts Premium 8 pack)
$230-280DensoFuel (8pack)

 
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Old Jan 10, 2026 | 10:47 AM
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That's a lot of work only to find out that it's not the fuel injector(s).
 
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Old Jan 10, 2026 | 10:51 AM
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Originally Posted by hispeed42
That's a lot of work only to find out that it's not the fuel injector(s).
Well I’ve gone through just about everything else. My last options are fuel injectors or fuel pump.

If you go to my previous thread, I talked about how I was only getting 19-21PSI of fuel pressure and it was also slowly going down.
I purchased fuel pumps/strainers and if that doesn’t fix it, I will be purchasing the injectors. But I just wanted to get an opinion on which Injectors were best.
 
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Old Jan 10, 2026 | 10:56 AM
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I replied to your other thread before seeing this one.
 
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Old Jan 12, 2026 | 12:56 PM
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That fuel pressure it too low. (I think it's about 30-40 lbs. depending if the vacuum line is attached to the regular or not) You might start by replacing the fuel pressure regulator before fooling with the injectors.
 
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Old Jan 13, 2026 | 12:32 PM
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Originally Posted by David N. Warner
That fuel pressure it too low. (I think it's about 30-40 lbs. depending if the vacuum line is attached to the regular or not) You might start by replacing the fuel pressure regulator before fooling with the injectors.
Those readings were taken with key on engine off. Ant got 40 with the engine running.
 
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