bamk2f6tornado Bronze Donating Members 777 Member For: 11y 11d Gender: Male Location: Rockhampton Qld Posted 14/07/14 09:21 AM Share Posted 14/07/14 09:21 AM I had a split fuel hose in my ba ute that would run low on power then limp mode. Mine was split about 15mm from the pump. Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 6m 17d Gender: Male Location: @ my laptop Posted 14/07/14 09:56 AM Share Posted 14/07/14 09:56 AM fuel pressure should actually increase with boost pressure, not just hold even Link to comment Share on other sites More sharing options...
JETURBO ...JD TUNING ADELAIDE... Gold Donating Members 23,708 Member For: 16y 6m 13d Gender: Male Location: Adelaide Posted 14/07/14 10:02 AM Share Posted 14/07/14 10:02 AM Id still be replacing those coils ...... 1 Link to comment Share on other sites More sharing options...
Benny Member 1,869 Member For: 21y 4m 9d Gender: Male Location: Newcastle Posted 14/07/14 10:55 AM Share Posted 14/07/14 10:55 AM (edited) fuel pressure should actually increase with boost pressure, not just hold evenAgreed.Benny, would u test before fuel filter or at the regulator.. (vn's used to have a connection where the fuel rail is to hook up a pressure guage? ba's have anything like that?I'd measure pressure as close to the rail as you can. I connect into the fuel line right before the rail on my GT. It will depend on how the gauge you have can be connected into the line.If your issue gets worse with low fuel I'd be pulling the pump and swirl pot to check that as well. Not an easy job with a ute I know.Benny. Edited 14/07/14 10:58 AM by Benny Link to comment Share on other sites More sharing options...
horze Member 35 Member For: 12y 9m 15d Posted 14/07/14 12:08 PM Author Share Posted 14/07/14 12:08 PM Agreed.I'd measure pressure as close to the rail as you can. I connect into the fuel line right before the rail on my GT. It will depend on how the gauge you have can be connected into the line.If your issue gets worse with low fuel I'd be pulling the pump and swirl pot to check that as well. Not an easy job with a ute I know.Benny.ok will try and hook up the reg tomorrow... benny any idea wat pressure it should be.... and regards to the fuel pump... ive just read up on it....... omfg wat a mission .. still havnt decided if im gonna change it from top or the bottom.... as from the bottom removing the tank is good to clean itthanks for the help I will reply back tomorrow with it Link to comment Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,323 Member For: 19y 2m 21d Gender: Male Location: Perth Posted 14/07/14 12:14 PM Share Posted 14/07/14 12:14 PM Id still be replacing those coils ......So would I. Cracked = farked. Your meter can't tell you what's going on when the coils hot and under load. I'll be amazed if it's a fuel pressure issue with a known suspect coil. Link to comment Share on other sites More sharing options...
gaz097 Bronze Donating Members 1,752 Member For: 13y 4m 23d Posted 14/07/14 12:58 PM Share Posted 14/07/14 12:58 PM 4 bar at idle. Should rise 1:1 with boost. Sounds like the problem I had. Car would not rev out with under half a tank, but had perfect pressure at idle. When the problem is happening does the car hunt back and forth? Link to comment Share on other sites More sharing options...
ratter Member 6,793 Member For: 18y 6m 17d Gender: Male Location: @ my laptop Posted 14/07/14 01:46 PM Share Posted 14/07/14 01:46 PM idles pressure should have the vacuum hose off and blocked Link to comment Share on other sites More sharing options...
horze Member 35 Member For: 12y 9m 15d Posted 14/07/14 01:47 PM Author Share Posted 14/07/14 01:47 PM 4 bar at idle. Should rise 1:1 with boost. Sounds like the problem I had. Car would not rev out with under half a tank, but had perfect pressure at idle. When the problem is happening does the car hunt back and forth?thanks for the help boyswhen you mean hunt what do you mean?ralph I think I will change the coils like you said but still gotta be a problem with fuel being after half a tank issue gets real bad Link to comment Share on other sites More sharing options...
willo88 Member 700 Member For: 12y 10m 20d Gender: Male Location: Newcastle Posted 14/07/14 08:26 PM Share Posted 14/07/14 08:26 PM (edited) Ok. So when adjusting my fuel pressure at idle, 4 bar with the vacuum line hooked up is too much? Edited 14/07/14 08:26 PM by willo88 Link to comment Share on other sites More sharing options...
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