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Discussion Starter #1
Hello,
i purchased a set of nozzles last week from Power Driven Diesel(5X.011 SAC). i installed them on my stock injectors. I can only get 1 to pop, the other 5 just squirt and wont build up pressure. i add shims until they no longer fit and still no pressure. i put my stock nozzles on and they pop every time. Am i doing something wrong? i have a 1990 w250 non intercooled.
 

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Hello,
i purchased a set of nozzles last week from Power Driven Diesel(5X.011 SAC). i installed them on my stock injectors. I can only get 1 to pop, the other 5 just squirt and wont build up pressure. i add shims until they no longer fit and still no pressure. i put my stock nozzles on and they pop every time. Am i doing something wrong? i have a 1990 w250 non intercooled.
Pull the nozzles apart and clean them really well with some brake clean, any small spec of dust or dirt can make them not seal. If that doesn’t fix it call PDD.
 
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POP issues aside, I assume you got the correct 155 degree nozzles for your engine.
 

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I'm not going to spoon feed you on this ( do some research ) but you can't simply install 7mm nozzles on your old 9mm inj bodies. This is your fault, not PDD's.
 
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Ah yes; I missed the fact that he put them on his '90 bodies.
 

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I'm not going to spoon feed you on this ( do some research ) but you can't simply install 7mm nozzles on your old 9mm inj bodies. This is your fault, not PDD's.
I guess that’s why your paid the big bucks!!! I missed that one too..... out of curiosity can you purchase the parts needed to make them work or are 9mm sticks junk? I ask because I have a set but don’t own a 9mm engine.
 

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Discussion Starter #8
POP issues aside, I assume you got the correct 155 degree nozzles for your engine.
No i got the 145 :banging:
I'm not going to spoon feed you on this ( do some research ) but you can't simply install 7mm nozzles on your old 9mm inj bodies. This is your fault, not PDD's.
I thought that I just needed to get the 7mm-9mm sleeve adapters.:doh:

I guess that’s why your paid the big bucks!!! I missed that one too..... out of curiosity can you purchase the parts needed to make them work or are 9mm sticks junk? I ask because I have a set but don’t own a 9mm engine.
Im curious too....
 

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You'll need the sleeve adapters to install 7mm IC 91.5-93 injectors on non IC 9mm bores.

I'm assuming you already have the adapters?

As far as I know, this is the only way to install the easily available IC injectors on a non IC truck, but 155 degree nozzles are needed for your truck regardless.

Most builders won't touch 9mm bodies, let alone the later IC bodies, as so many are just molested during their removal.

Hope that helps.
 

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Most builders won't touch 9mm bodies, let alone the later IC bodies, as so many are just molested during their removal.

Hope that helps.
What builders won’t touch I/c bodies? I understand most wont touch 9mm bodies or only give partial credit because you can’t just put new nozzles on them.... you have the problem this guy is experiencing.
 

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Nothing wrong with 9mm bodies/parts, other than the range of 9mm nozzles to rebuild them are very limited. I only have 5x16 nozzles in 9mm, nothing smaller. Yes you can convert 9mm bodies to 7mm but it requires a hand full of parts to do so. I personally can't/won't be bothered dealing with the added cost.
 

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Hello,
i purchased a set of nozzles last week from Power Driven Diesel(5X.011 SAC). i installed them on my stock injectors. I can only get 1 to pop, the other 5 just squirt and wont build up pressure. i add shims until they no longer fit and still no pressure. i put my stock nozzles on and they pop every time. Am i doing something wrong? i have a 1990 w250 non intercooled.
.

I had the same problem I didn't see the 7mm and 9mm injectors option you can buy brass I believe sleeves that you can put on there to make the 7mm injector nozzles on a 89/early 90s truck
 

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The sleeves are so one can install the entire IC 7mm injector assembly (bodies/nozzles etc) into a 9mm non IC head.
 

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Discussion Starter #15
The other day when I posted this I emailed PDD the same question, and they said "you need to lap the body, lap the nozzle and lap the needle to the nozzle." So would lapping the nozzles make them work on my stock injector bodies. I know they are the wrong spray angle, just curious....
 

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The other day when I posted this I emailed PDD the same question, and they said "you need to lap the body, lap the nozzle and lap the needle to the nozzle." So would lapping the nozzles make them work on my stock injector bodies. I know they are the wrong spray angle, just curious....
They are not first gen experts (p pumps are their world) a 9mm injector is missing pieces to use a 7mm nozzle.


Plus their nozzles are pre-lapped you talked to the wrong person apparently.
 

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Also, the PDD website clearly states compatible with 91-98 when installed on 7mm bodies.
 

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Yep, myother is right, they clearly don't know the relationship between a 9mm body & it's contents, compared to a 7mm nozzle. Parts look similar but are different & do not match up correctly.
 

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Yep, myother is right, they clearly don't know the relationship between a 9mm body & it's contents, compared to a 7mm nozzle. Parts look similar but are different & do not match up correctly.
Well... actually they do. Their website clearly says they will work with 91-98 7mm injectors. But the person he emailed did not or at least did not ask.
 

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Well... actually they do. Their website clearly says they will work with 91-98 7mm injectors. But the person he emailed did not or at least did not ask.
a 91 inj is a 9mm body parts & 9mm nozzle.....a 91.5 is a 7mm body parts & 7mm nozzle.
So, their description isn't exactly accurate just saying 1991...there is a difference.
 
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