natenkiki2004
Blue Bomb!
- Joined
- November 3, 2013
- Messages
- 2,044
- Reaction score
- 80
- Location
- North Idaho
- Year, Model & Trim Level
- 1991 & 1994 Explorers
Since I asked that question, I've actually purchased a set for myself from hp27fx on eBay. They're 4-hole injectors from a Mustang;
http://www.ebay.com/itm/131490836838
Part number 280 150 943. Same flow as the stock injectors, just improved design.
I've been meaning to start a writeup since I have pictures and experience with them but I honestly haven't had the chance to fill my tank and start doing mileage readings. But, here's the jist of it:
I would buy from that seller again, would recommend them to anyone looking for injectors for the 4.0L. He's very quick to reply to questions and informative too. Quick to ship and here's how the injectors arrived (oiled & sealed):
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020933.JPG
Here's what they look like compared to my stock 1991 units:
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020937.JPG
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020939.JPG
As far as differences in performance, I used to have a nasty problem with cold starts, having to either crank twice or pump the pedal while starting. Since I also opted to change my FPR (though it didn't look faulty when I took it apart), I can't say for 100% certainty that the new injectors fixed that issue. However, the Explorer starts quicker which tells me that the fuel is being atomized much more than the old injectors. I also used to have a warm start issue, where the engine would feel like it wanted to die then smooth out but I've done a lot of things to the engine since I last had that issue so I wouldn't count on the injectors fixing that.
I'm really hoping for better fuel economy since I don't feel like the improvements I've seen have been worth the $100 in new injectors.
http://www.ebay.com/itm/131490836838
Part number 280 150 943. Same flow as the stock injectors, just improved design.
I've been meaning to start a writeup since I have pictures and experience with them but I honestly haven't had the chance to fill my tank and start doing mileage readings. But, here's the jist of it:
I would buy from that seller again, would recommend them to anyone looking for injectors for the 4.0L. He's very quick to reply to questions and informative too. Quick to ship and here's how the injectors arrived (oiled & sealed):
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020933.JPG
Here's what they look like compared to my stock 1991 units:
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020937.JPG
https://dl.dropboxusercontent.com/u/464376/vehicles/1991 Explorer/Pictures/Valvetrain/P1020939.JPG
As far as differences in performance, I used to have a nasty problem with cold starts, having to either crank twice or pump the pedal while starting. Since I also opted to change my FPR (though it didn't look faulty when I took it apart), I can't say for 100% certainty that the new injectors fixed that issue. However, the Explorer starts quicker which tells me that the fuel is being atomized much more than the old injectors. I also used to have a warm start issue, where the engine would feel like it wanted to die then smooth out but I've done a lot of things to the engine since I last had that issue so I wouldn't count on the injectors fixing that.
I'm really hoping for better fuel economy since I don't feel like the improvements I've seen have been worth the $100 in new injectors.
