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Old 01-24-2013, 08:40 PM   #231 (permalink)
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Default Re: Re: My 1992 3000GT VR-4 Rebuild.

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Originally Posted by Lunchbox View Post
Yeah, I have a few other projects to finish before I can go any further on this one money-wise. If I get to it before you I will report back
I'm starting to think more and more that it is the FPR. I used to have slow starts (crank for about 5 seconds and then it lazily starts) probably once or twice a week. For about the past 2 weeks it has done it damn near every time. I think this makes sense when you take into account the leaking sound I was hearing coming from the plenum that I posted in the other thread. Since my FPR is tied into the plenum, I think it is bleeding off between starts.

I had some spare time so I decided to clean my wheels. I haven't really cleaned them in probably 2.5 months or more. Since they are black, it really looked like crap. Lol. They almost looked grey.

Before:



I took off a quality control sticker so you could really see just how dirty they were.



I forgot to get a pic of the front. Lol.

After:







It isn't much of an update, but it's better than nothing
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Old 01-24-2013, 09:18 PM   #232 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

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I'm starting to think more and more that it is the FPR.
Pull the vacuum line and see if any fuel spits\leaks out. It may take several minutes before you see a leak so be patient.
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Old 01-24-2013, 09:49 PM   #233 (permalink)
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Default Re: Re: My 1992 3000GT VR-4 Rebuild.

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Pull the vacuum line and see if any fuel spits\leaks out. It may take several minutes before you see a leak so be patient.
When would the best time to do this be? Right after shutting it off I assume?
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Old 01-24-2013, 10:51 PM   #234 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

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When would the best time to do this be? Right after shutting it off I assume?
At normal operating temperature and the vehicle is running. The diaphragm inside the FPR goes weak with heat. That is when you should find the problem.
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Old 01-24-2013, 11:11 PM   #235 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

If it is bad, could I replace it with something like this?

Fuel Pressure Regulator Eclipse 3000gt Talon Lancer EVO | eBay

Or this

GTE Fuel Pressure Regulator Universal JDM Adjustable Turbo Fuel 140PSI (FPR-R) : Amazon.com : Automotive GTE Fuel Pressure Regulator Universal JDM Adjustable Turbo Fuel 140PSI (FPR-R) : Amazon.com : Automotive

They seem to be the same exact thing to me actually.

Because it is adjustable, it will support the 15gs I plan to install.
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Old 01-25-2013, 10:16 PM   #236 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

Quote:
Originally Posted by Djmba View Post
If it is bad, could I replace it with something like this?

Fuel Pressure Regulator Eclipse 3000gt Talon Lancer EVO | eBay

Or this

GTE Fuel Pressure Regulator Universal JDM Adjustable Turbo Fuel 140PSI (FPR-R) : Amazon.com : Automotive

They seem to be the same exact thing to me actually.

Because it is adjustable, it will support the 15gs I plan to install.
I am sure the FPR's would work, but I am not so sure about the accompanied fittings. I would buy fittings from someone like 3SX to make sure they will adapt. Just double check the AN fitting sizes provided.
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Old 01-25-2013, 10:19 PM   #237 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

I have the adapters to the rails. All I would need is SS hose, and banjo fittings I think.
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Old 01-26-2013, 03:35 PM   #238 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

I didn't read the rest of the thread but if you haven't already changed the fuel filter a clogged one will cause the same slow starts to happen.
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Old 01-26-2013, 04:55 PM   #239 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

Thanks for your input. The filter has about 10k on it. I planned on changing it when/if I did the FPR. I haven't even looked to see if the FPR is leaking because I have been busy with physics homework. I might do it tomorrow. If the FPR isn't bad, I will take a look at the filter.

On a side note, I passed 5000 miles on the rebuild today I also went to drop off the flywheel for the other engine to get it balanced, but realized that it would be best to resurface it first before it was used to balance the engine. I wound up leaving with the flywheel and dropping off the front turbo exhaust housing that had the hole welded shut for him to fix. I will get the flywheel resurfaced and drop it off at the machinist probably Monday.
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Old 01-29-2013, 08:58 PM   #240 (permalink)
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Default Re: My 1992 3000GT VR-4 Rebuild.

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Originally Posted by Djmba View Post
Thanks for your input. The filter has about 10k on it. I planned on changing it when/if I did the FPR. I haven't even looked to see if the FPR is leaking because I have been busy with physics homework. I might do it tomorrow. If the FPR isn't bad, I will take a look at the filter.

On a side note, I passed 5000 miles on the rebuild today I also went to drop off the flywheel for the other engine to get it balanced, but realized that it would be best to resurface it first before it was used to balance the engine. I wound up leaving with the flywheel and dropping off the front turbo exhaust housing that had the hole welded shut for him to fix. I will get the flywheel resurfaced and drop it off at the machinist probably Monday.
I smell money burning in someone's pocket!!!!!!!

Just got back in town. Hope Physics has not popped your cork!!!

Let us know what you find on the FPR.
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