DSM1290 Posted June 19, 2011 Report Share Posted June 19, 2011 It has a issue starting. It cranks and cranks but doesn't fire up. I have to use starting fluid and then it will fire up. It doesn't do it all of the time, normally only the first start of the day. I just replaced the fuel pump in it. B/c it went bad. I thought that might fix it but no luck. IS there maybe some type of regulator or something like that that is going bad? Filter? any ideas would help. And if anyone know a good jeep forum i could ask on to that would be nice. Thanks. Quote Link to comment Share on other sites More sharing options...
craig71188 Posted June 19, 2011 Report Share Posted June 19, 2011 Your Jeep has a fuel pressure regulator on it. The symptom you describe is typical of a failed/failing regulator (they hold pressure in the F/I rail after the vehicle is shut of besides regulating the pressure). One easy thing to check is to find the regulator and pull off the vacuum hose that is attached - if there is any fule or smell of fuel in the hose, the regulator needs replaced (diaphram is leaking). Not findin fule does not mean it's not bad, but if it is there, replace it. Quote Link to comment Share on other sites More sharing options...
Browning Posted June 20, 2011 Report Share Posted June 20, 2011 I'd have the ignition switch checked first(switch on column, not the tumbler) Quote Link to comment Share on other sites More sharing options...
DSM1290 Posted June 20, 2011 Author Report Share Posted June 20, 2011 I pulled the vac. line on the end of the regulator and it smelled a little of gas. But i mean it would smell a little like gas wouldn't it? Or should it not at all? And i have checked the spark it i getting good spark. Thanks for the help so far. Quote Link to comment Share on other sites More sharing options...
TA In Progress Posted June 20, 2011 Report Share Posted June 20, 2011 (edited) I pulled the vac. line on the end of the regulator and it smelled a little of gas. But i mean it would smell a little like gas wouldn't it? Or should it not at all? And i have checked the spark it i getting good spark. Thanks for the help so far. It shouldn't smell like fuel. Was the vac. line wet with fuel? If it was, then the diaphragm in the reg. is shot like Craig said. Edited June 20, 2011 by TA In Progress Spelling Quote Link to comment Share on other sites More sharing options...
DSM1290 Posted June 20, 2011 Author Report Share Posted June 20, 2011 It didn't really seem wet but it did have the fuel smell. I will try to get a reg. later this week and see if it does anything. Thanks for the help. Quote Link to comment Share on other sites More sharing options...
Skinner Posted June 20, 2011 Report Share Posted June 20, 2011 crank no start on a 4.0 check the Crank position Sensor. The plug for it is on the back part of the intake. I replaced mine last year when the same thing happened. Quote Link to comment Share on other sites More sharing options...
craig71188 Posted June 20, 2011 Report Share Posted June 20, 2011 I pulled the vac. line on the end of the regulator and it smelled a little of gas. But i mean it would smell a little like gas wouldn't it? Or should it not at all? And i have checked the spark it i getting good spark. Thanks for the help so far. Should not smell like gas - diaphram between fuel and vacuum - if it smells like gas, it's bad. Keep in mind it's hot out and gas will evaporate very quickly so seeing it actually "wet" is not likely. Quote Link to comment Share on other sites More sharing options...
3.1cutlass Posted June 20, 2011 Report Share Posted June 20, 2011 http://www.comancheclub.com/ Quote Link to comment Share on other sites More sharing options...
Browning Posted June 20, 2011 Report Share Posted June 20, 2011 if that vac is dry the regulator probably isn't bad. Seriously, check that switch on the column. Just went through this a couple weeks ago on a 93 camaro. Ran good once you got it started with starting fluid, but would not fire up on its own at all Quote Link to comment Share on other sites More sharing options...
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