Fuel injectors, bottom line

[RichP]

OK, need to replace all 6 of my injectors on the Jasper engine thats coming in on monday, just how good is 'FiveO motorsports'. I'm looking at the Bosch design II, set of 6 for $202 or the F6VE for $212. Other than I know they are there I have never had any interaction with them other than the skinny pedal and to check for leaks.

 

[Oldmanxj]

Bought a set from them about six months ago, no problems. good service.
Bought the Bosch II's from them, Runs fine. And yes the the little nozzle cover stays on ( looks like a little bowler hat) Keeps small stuff from getting into nozzles.

 

[heyhar]

Rich, what was the ultimate problem with the engine? I saw in a post where the injectors, I believe, malfunctioned, but did they cause something else to break? I just need something else to worry about as I approach 200K.....Thanks..Ray

 

[jeepsrock]

Out of curiosity what yr is your jeep ? What flow ratings are those bosch injectors rated at ?

pete

 

[Oldmanxj]

Pete, My jeep is a 1989 4.0 and the injectors are the 19lbs ones.
Here's a link to Five-O http://www.fiveomotorsport.com/Injector_SetsJEEP.asp

 

[RichP]

Mine is a 98 w/~307,000mi on it, #3 cylinder has no compression so my two options were to have the head pulled and 'done', cost was around $1000 for a full valve job, new injectors, etc and then put the head back on a 300,000+ miles block. Second option was a new motor for $2100 from jasper w/a 3yr 75,000mi warranty.
What we think happened was injector #3 failed open and washed the cylinder walls also burning the valves.
The downside is I have no place to do this myself or I would have pulled the head for a looksee and might have considered doing the work myself but leaving at 7am and getting home at 6pm m-f does not leave me a lot of time, not to mention the weather has turned bastard cold again.
I came within 5 minutes of buying a very nice 01 Sahara for $10K that I had been driving by for the past two weeks but missed it by 5min.
If I had 'do overs' I think I would now and will in the future replace injectors every 100K.
Still trying to figure out what I did that my karma turned so bad

 

[otto]

Has anyone used the F6VE (710) set Bosch Design III injectors in a RENIX I6 or know the difference between Bosch Design II and Design III?

 

[RichP]

Well, ordered the bosch II injectors from 50MS, should be here on tue or wed, they ship us mail. Best price I could get anywhere else was $300+ so $202+$9 for shipping was welcome. This engine thing is getting expensive, figured I would do the O2, cat and cat back, TB sensors and really scrub the TB and intake manifold while they are off..
It is also getting a new clutch while the engine is getting swapped out, might as well...

 

[Johnny V]

I installed the Bosch injectors from 5motorsports last year in my '89.

Was plug and play. Had them over a year and no problems...with excellent performance boost... like a new engine.

 

[montanaman]

I bought a set of 6 fuel injectors for my '91 4.0 HO. OEM replacement with lifetime warranty and lifetime free cleaning service. $162.00, including shipping.

http://tunertoys.zoovy.com/category/fuelinjectorsstock/

I've only had them for about 6 months, but they are doing great.

 

[Nevada City Sparky]

QUESTION: There's a VERY clean '94 Grand Cherokee w/ 4.0L engine at my local junkyard. Will the Fuel Injectors fit my '89?

 

[RichP]

I bought a set of 6 fuel injectors for my '91 4.0 HO. OEM replacement with lifetime warranty and lifetime free cleaning service. $162.00, including shipping.

http://tunertoys.zoovy.com/category/fuelinjectorsstock/

I've only had them for about 6 months, but they are doing great.

They only go up to 95, mines a 98. If I had known I might have given them a call..