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Old 09-08-2010, 01:36 AM   #1
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Default Pintle vs Bosch..what do you prefer?

So correct me if I'm wrong, but stock miata injectors are Bosch disc style. As are deatschwerks injectors such as their 600's. The rx-7 PNP's such as the 460's and the 550's are pintle style. Word is that the pintle style is the best injector type you can use, but I had better luck with the Bosch style. Is there a difference and a reasoning that you guys would use one before the other? My reason is...my 460's were cleaned, but i still got that infamous MS "pop" when turning the key on, which is said to be caused by fuel leaking past the injectors. I have heard that it was cause the injectors are cleaned with water based cleaning solution and if they sit on the shelf for a while, they rust internally a little, causing them to not seal properly. Thus, your rail stays pressurized after shutdown, so the fuel leaks past the injectors. If I put my stock injectors back in, even if they sit for months, I have no problems. Give your opinions / experiences please!
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Old 09-08-2010, 09:27 AM   #2
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Why can't you ever break your thoughts into paragraphs?

here's what I want to see from you next time:

Quote:
So correct me if I'm wrong, but stock miata injectors are Bosch disc style. As are deatschwerks injectors such as their 600's. The rx-7 PNP's such as the 460's and the 550's are pintle style. Word is that the pintle style is the best injector type you can use, but I had better luck with the Bosch style.

Is there a difference and a reasoning that you guys would use one before the other?

My reason is...my 460's were cleaned, but i still got that infamous MS "pop" when turning the key on, which is said to be caused by fuel leaking past the injectors.

I have heard that it was cause the injectors are cleaned with water based cleaning solution and if they sit on the shelf for a while, they rust internally a little, causing them to not seal properly. ThusSo when your rail stays pressurized after shutdown, so the fuel leaks past the injectors.

If I put my stock injectors back in, even if they sit for months, I have no problems. Give your opinions / experiences please!
Get new injectors, the style of the Rx7 injectors is not preferred, seems you have bad ones.
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Old 09-08-2010, 11:08 AM   #3
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Ok, so you're saying I should buy a brand new set of DW 600's and I shouldn't have a problem?
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Old 09-08-2010, 11:11 AM   #4
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yes
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Old 09-08-2010, 11:17 AM   #5
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neither, get ev14 style injectors (example: ID750)
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