relyt120 Posted October 6, 2012 Author Share Posted October 6, 2012 Looks like I have a date with my plug socket in the near future :crossfingers: thanks for the input, this issue is really starting to concern me, I've been lucky and its only been really bad near home and not 25mi away at school Link to comment Share on other sites More sharing options...
cruiser54 Posted October 6, 2012 Share Posted October 6, 2012 You really ought to do a fuel pressure test. Also, a connector refreshing since you say bumps affect it. Look at your fuel pump ballast resistor. It's a white ceramic piece bolted near the air cleaner and has a wire at each end. Are the connectors tight? Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted October 6, 2012 Share Posted October 6, 2012 What could the ballast resistor possibly do to cause this? and he said he already did a fuel pressure test, said it was perfectly fine. Link to comment Share on other sites More sharing options...
mvusse Posted October 6, 2012 Share Posted October 6, 2012 If it's an overfueling issue, the ballast resistor cannot be the cause. The cat being red hot does usually mean way too much unburned fuel is entering the exhaust, so Mountanman may be on to something. Link to comment Share on other sites More sharing options...
relyt120 Posted October 6, 2012 Author Share Posted October 6, 2012 I've never been able to do a fuel pressure test while it was happening so my test may be irrelevant, I'll try to get one when it happening and I'll check the plugs too. Thank you all for replying, I hate having contempt for my mj on the side of the road... Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted October 7, 2012 Share Posted October 7, 2012 Could be your issue, or you may have an injector harness shorting causing the injectors to go full pulse width and flood your motor with raw fuel. Next time it happens.. pull off the road immediately. Then pull all 6 spark plugs and lay them in order. find the one thats fouled, or if its ALL of them, youll know which direction to go. :) I agree 100% on the overfueling issue, BUT lets say he does exactly what you said and dicovers 5 of the 6 plugs are drenched in fuel, now what? Or even 1 plug is drenched. either way its not going to be fun tracking it down. Link to comment Share on other sites More sharing options...
relyt120 Posted October 12, 2012 Author Share Posted October 12, 2012 Had a auto parts coupon bout to expire so I thru a new fuel pressure regulator on, been try in to take as many bumps as possible trying to induce the issue but nothing so far, if you read the thread you'll see I've said this like 3 times then it just happens but so far so good.....I hate an issue I can't easily test if its still occurring. Either way :crossfingers: Link to comment Share on other sites More sharing options...
89Patches Posted October 13, 2012 Share Posted October 13, 2012 Stock Injectors? Check the Injector plugs and your timing, and if its running really rich you"ll smell it... Link to comment Share on other sites More sharing options...
Sugarfoot Posted October 19, 2012 Share Posted October 19, 2012 Follow the two wires from the gas tank to your firewall. On my 88 they are orange and black, but wrapped. Flip it over and look along the top side which may be shorting to the chasis. This is a low voltage current so you will not get an easy clue seeing some spark in the dark. The bumps may be changing the voltage via the short to the chassi and the ton of gas may be you pummping the gas like mad. Does it ever not want to start? Hang in there. Link to comment Share on other sites More sharing options...
relyt120 Posted October 21, 2012 Author Share Posted October 21, 2012 Could have sworn I updated this, after replacing the fuel pressure regulator I have had no further issues not even a hiccup, previously my spells of normality were littered with short instances of the issue which are no longer present. At the moment I consider the issue resolved thank you all for your input. Link to comment Share on other sites More sharing options...
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