New to me 94 Laredo - Page 19 - JeepForum.com
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post #271 of 279 Old 09-22-2021, 01:46 PM Thread Starter
DirectMatrix
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1992 YJ Wrangler 
 
Join Date: Aug 2010
Location: Virginia Beach
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Got everything all buttoned up and topped up. She started after a bit of cranking. Sounds good, but I have a pretty bad fuel leak at the fuel pressure regulator right next to the distributor cap. Not the best place to troubleshoot a fuel leak.

Don't really want to pull the driver's side fuel rail but that's probably what it's going to take to diagnose.

Also, why did it take me so long to buy one of these special coolant funnels!?!?!!!

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92 YJ, Delilah

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post #272 of 279 Old 09-22-2021, 02:12 PM Thread Starter
DirectMatrix
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Seals look ok on the regulator which is where is appears to be coming from. You can see a drip in the corner of the flange when I turned the key to power up the fuel pump and build pressure.
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92 YJ, Delilah

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post #273 of 279 Old 09-22-2021, 02:42 PM Thread Starter
DirectMatrix
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Cleaned the mating surfaces and inspected the o-rings. Is there a rebuild kit for this? Nothing wrong with the regulator, just need new o-rings.

I suspect the bracket isn't putting enough pressure on the regulator for a seal. Going to try and make some shims.

92 YJ, Delilah

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post #274 of 279 Old 09-22-2021, 03:05 PM Thread Starter
DirectMatrix
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Shim didn't work. Used cork gasket material to try and get the hold down bracket to apply more force. No dice. On the hunt for a regulator or an o-ring rebuild kit.
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92 YJ, Delilah

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post #275 of 279 Old 09-22-2021, 04:53 PM Thread Starter
DirectMatrix
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Looks like the 53030001 part number for the pressure regulator is the same as my YJ. Maybe I'll just swap and confirm the issue. But, then again, do I want to open that can of worms on my YJ????

92 YJ, Delilah

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post #276 of 279 Old 09-23-2021, 06:40 AM Thread Starter
DirectMatrix
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Decided late last night not to mess with the YJ and just ordered a new regulator for the ZJ from Jeff Bezos. Probably should have went Mopar, but I went with Delphi. The Mopar ship date was Oct 1 and I can't wait that long. Need to get this project finished. Only time will tell if a new one fixes the leak and if there's any fuel pressure delivery issues.

If that isn't the issue, then I might have torqued the whole fuel rail assembly and put too much pressure on the fitting below the regulator, but I don't think that's the case. The fuel seems to be coming up from the top side, not migrating from the back. The other fittings seem to be ok.

There are $9-$10 regulators on ebay with free shipping. Thinking about picking one up just for the gaskets. I found a new gasket set on ebay from Crown, and its $21 just for the gaskets.

92 YJ, Delilah

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post #277 of 279 Old 09-24-2021, 05:35 AM
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I found these. Still around from back when I had my '94 V8 ZJ. I won't ever need them again. One is a new Standard brand and the other is used Mopar. I recall it being good. IM me if you want them.
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post #278 of 279 Old 09-24-2021, 10:48 AM Thread Starter
DirectMatrix
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Quote:
Originally Posted by HighLonesome View Post
I found these. Still around from back when I had my '94 V8 ZJ. I won't ever need them again. One is a new Standard brand and the other is used Mopar. I recall it being good. IM me if you want them.
Generous offer and much appreciated. PM sent

92 YJ, Delilah

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post #279 of 279 Old 09-25-2021, 08:04 AM Thread Starter
DirectMatrix
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Started and running. No more fuel leaks after the new regulator. I took the gaskets off the Delphi unit and put them on my stock Mopar unit. Sounds like I'll get some freebies from New Mexico soon.

I'm a bit disappointed in the whole situation. The long crank at startup is still present. I thought that would be cured as part of this.

The oil pressure gauge still fluctuates even with the new sending unit.

The exhaust sounds good and no more rattling. The engine overall sounds quieter but I detect the occasional stumble. Nothing is reflected on the scanner as far as rpm drop goes, but I can hear it.

As best as I can tell, there is no more smoke at startup, so that's something.

I guess I just had higher expectations for the amount of components changed.

92 YJ, Delilah

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