Subject	That's it. It's on TTs only. I have a fuel pressure gauge...
Posted by	MLPS300ZX on May 13, 2019 at 2:45 PM
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In Reply To	Re: Re: Starting issue: Continued posted by MLPS300ZX on May 12, 2019 at 09:34 PM
Message	and could see fuel pressure was still zero when I turned the key and primed the pump. Once I let it crank I could see the fuel pressure slowly rise, then free fall back to zero once I stopped cranking. If I cranked it over long enough it would build enough pressure and start, stumble and then hold correct fuel pressure. I replaced this valve and it solved the problem. This does not sound like your issue though because a bad fuel pressure check valve would not be temperature dependent.
Follow Ups	Starting issue: Continued - BannonZ 09:58:50 05/11/19 More parts replaced - BannonZ 10:23:36 05/11/19 Fuel pump controller unit? - FrozTTy 11:02:40 05/11/19 hmm - BannonZ 11:32:09 05/11/19 Did you bypass the FPCM? (n/m) - FrozTTy 09:35:28 05/14/19 Not yet. (n/m) - BannonZ 11:45:22 05/15/19 Re: Fuel pump controller unit? - Metacom 16:07:09 05/11/19 Yes - BannonZ 19:24:48 05/11/19 Check this thread out - Cjw3 11:39:57 05/11/19 Definitely has similarities. It hasn't been more than 50 f - BannonZ 13:12:55 05/11/19 Re: Definitely has similarities. It hasn't been more than 50 f - Cjw3 14:07:42 05/11/19 Re: Starting issue: Continued - MLPS300ZX 21:29:07 05/12/19 Re: Re: Starting issue: Continued - MLPS300ZX 21:34:28 05/12/19 Where is this valve located? (n/m) - FrozTTy 08:31:18 05/13/19 This one? - BannonZ 11:49:27 05/13/19 Yes that, but I'm wondering where it is on the car... (n/m) - FrozTTy 15:37:09 05/13/19 That's it. It's on TTs only. I have a fuel pressure gauge... - MLPS300ZX 14:45:40 05/13/19 I did a fuel pressure test today. - BannonZ 14:57:57 05/13/19 Is your chip setup for dual or single pop? - MLPS300ZX 16:50:31 05/14/19 I also brought this up (below) - FrozTTy 17:02:25 05/14/19 I was using a Specialty Z chip with dual pop and set up for - BannonZ 09:46:37 05/15/19 50psi cranking seems high. - MLPS300ZX 22:55:49 05/20/19 To back up a little for diagnostic purposes: When did the - SirpriZ 15:33:12 05/13/19 I have had this problem, getting progressively worse since - BannonZ 07:52:20 05/14/19 You've ruled out alot of potential issues: It isn't the - SirpriZ 18:35:43 05/14/19 Thank you for your help. - BannonZ 09:37:07 05/15/19 YW I don't think an internal engine issue would cause all - SirpriZ 15:09:32 05/15/19 What about the wiring that relocated PTU? - FrozTTy 09:34:04 05/14/19 When I put the new PTU in I replaced the harness with a - BannonZ 09:39:32 05/15/19 Silly question, but are you sure the gas is good? (n/m) - ZBOOSTT 14:13:38 05/15/19 I don't keep more than a quarter tank in the vehicle - BannonZ 14:44:09 05/15/19 Try one gallon of Toluene and that will clean the injectors - ZBOOSTT 18:59:51 05/20/19 Update - BannonZ 15:59:22 05/21/19 That's a shame. At least you'll have a definitive idea of - SirpriZ 19:46:17 05/21/19 That's a bummer! Keep us posted! (n/m) - MLPS300ZX 02:54:25 05/22/19 Thanks guys, I will let you know. - BannonZ 07:26:51 05/22/19 GL let us know what's next (n/m) - FrozTTy 08:19:25 05/23/19
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