1979280zx Posted May 7, 2012 Share Posted May 7, 2012 Title says it all its got me stomped boost hits at 3000 rpm an it dies an will not pull anymore Quote Link to comment Share on other sites More sharing options...
Pyro Posted May 7, 2012 Share Posted May 7, 2012 Lots of things can cause that. For example. Mine has done that a few times over the years. One time is was loose spark plugs and the other time was a leak in the fuel pressure regulator which dump extra gas into the intake from the vacuum port hose. I'm sure there are other things to check. Like a bad air flow meter or weak ignition (no name a few). Good luck finding that. Quote Link to comment Share on other sites More sharing options...
Challenger Posted May 7, 2012 Share Posted May 7, 2012 Please make some distinction between sentences. It's the rules on hybridz. Is this a stock turbo engine? What year? Have you been able to check fuel pressure while in boost? Has it always done this, just started? We need more information from your end to help. Quote Link to comment Share on other sites More sharing options...
1979280zx Posted May 7, 2012 Author Share Posted May 7, 2012 the car is a 1979 datsun 280zx. it is a na engine with a t3/ t4 turbo. the car just started doing this never had it happen before. at 5 pounds of boost I get 65 pounds of fuel pressure. I am running a msd 6al ignition box. I have the timing is set at 22 degrees advance. Quote Link to comment Share on other sites More sharing options...
phil280zxt Posted May 8, 2012 Share Posted May 8, 2012 How are you controlling boost? Manual controller? Electronic controller? It may be the wastegate opening too early. How about the emergency pop off valve opening too early. I believe it normally opens around 9 psi but could be leaking earlier. Quote Link to comment Share on other sites More sharing options...
Pyro Posted May 8, 2012 Share Posted May 8, 2012 A little too much fuel pressure for only 5 psi of boost. But the timing seems right. I like running around 8 psi of boost with 65 psi of fuel pressure when using stock NA injectors Check the spark plugs. With the engine running, Pull the vacuum line to the stock fuel pressure regulator to see it any fuel comes out. Also pinch the return fuel line with the line off to see if fuel comes out. Quote Link to comment Share on other sites More sharing options...
1979280zx Posted May 8, 2012 Author Share Posted May 8, 2012 I got that problem figured out. The thing now is you rev the car an it stay at 3000rpm an you have to shut it down an restart it again to get it to idle Quote Link to comment Share on other sites More sharing options...
1979280zx Posted May 14, 2012 Author Share Posted May 14, 2012 Got it all figured out Quote Link to comment Share on other sites More sharing options...
BluDestiny Posted May 14, 2012 Share Posted May 14, 2012 What was the issue? Quote Link to comment Share on other sites More sharing options...
Stevemd24 Posted June 21, 2012 Share Posted June 21, 2012 My 240z rb20det has started doing this, I hit 3000 rpms and my car just chokes, Quote Link to comment Share on other sites More sharing options...
Kash Posted September 3, 2012 Share Posted September 3, 2012 My 240z rb20det has started doing this, I hit 3000 rpms and my car just chokes, Too wide of a plug gap or too high of a fuel pressure under boost. Quote Link to comment Share on other sites More sharing options...
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