Let me start by saying that I’m almost 40 years old and I’ve been a professional mechanic for 20 years, and I worked on a Honda twice in those 20 years, so I am not very familiar with them. I picked up a 96 passport with the 3.2 and when I got this it was not running. It had been sitting on a farm for a few years. You could pour gas on a towel and put it inside the intake box and it would start an idle till the gas was gone, therefore I knew I was dealing with a fuel pump. So I replace the fuel pump and then I begin getting fuel up to the rail according to my pressure gauge, but I was still not getting anything without the tail in the box. So I ordered all six injectors and gasket kit and install them. Once I install them I did get it run but it was not smooth at all and my gauge was reading a very massive fluctuation in fuel pressure. So I replaced the fuel pressure regulator and alternator because it was bad as well, And it would start and purr like a sick kitten but it had not had a tuneup yet and I was pleased with the way it was running for what it was and how long it had been sitting. Also before I go any further let me mention whenever I change the fuel pump are pumped every drop of fuel out of the tank and put fresh gas in it. Now I started to take it for a test drive a backed up approximately 30 feet put it in park and revved it up a few times but nothing extreme and it died. So I drifted it back to where I had previously been working on it and check for fuel pressure which I had zero. I cranked it over a few times at which point the engine seem to lock up and the starter sounded like it was spinning on its splines. So I began pulling plugs and found that one of the cylinders was full of fuel. With the plug removed Turn the engine over and blew the fuel out of the cylinder, replace the plug and attempted to start again with the same results. So I determined the injector had failed and was stuck open. So I ordered another set and installed them With no new results. However this time whenever I remove the intake I noticed it had fuel in it, so once the truck did not start a pulled the little hose where the map sensor connects, and was greeted with a full stream of fuel. Now this is where I get lost. Has anyone ever dealt with an issue like this before?

 

A failed fuel pressure regulator will leak fuel into the vacuum hose and fill the nearest cylinder.

Also that be an Isuzu not a Honda. Just has Honda badges for the US market.

Finally, at that age the ECU becomes suspect with aged capacitors. Odd things start to happen like stuck on injectors and fuel pumps no running.

 

Yes I agree that that age and things happen that make little to no sense. And yes I saw the Isuzu and GM both emblems on certain parts throughout the truck. Thank you for the reply, and I was thinking the regulator however I just replaced it and I know new parts fail but I mean I didn't run it but an hour tops with the new regulator. But hindsight, I'd still buy it for what I've got in it so far. What is the recommended intervals for timing belts on these things? And also, is there anything else I should look out for? Anything common to fail other than frame rot? And also as for the filling of the nearest cylinder, its actually filling the one nearest the firewall on the drivers side. I mean it may be filling them all but thats the one I found to be the most severe. Thanks in advance.

 

Pull the vacuum hose off the regulator and see if fuel pours out when it primes the fuel pump?

Typical Honda V6 is 100k miles or 7 years on the timing belt for modern stuff. The older stuff I think was 60k miles.