Help

[kwhitley054]

Ok need some help guys. So I rebuilt my 2007 4.0 V6 SHOC so I had gas dumping into my cylinder so I changed my fuel injector and when I was putting my upper manifold back on and I was not paying attention to what I was doing and I broke two bolts off so I'm trying to find out where I can get bolts at or if I can use different bolts than what comes on the manifold. Because I cannot find them bolts for that particular engine for it.

 

[franklin2]

Do you have any good ones you can take with you to the store? My local Napa was the only place I could find the proper metric bolts for my ranger exhaust manifolds. Fastenal is another place you could try.

 

[Uncle Gump]

Junk yard...

Should be a couple bad SOHC Engines in every junk yard in the US.

 

[kwhitley054]

thank you guys I got some from the junk yard. But i do have some other questions for someone. Ok so my truck is the engine rotates but will not start. I had to change a fuel injector because it was dumping gas all into my cylinder. I am also having problems with holding gas pressor and I am still smelling fuel it is not as strong as it was before i had changed my fuel injector. I don't know where to go from here.

 

[Curious Hound]

Need to check fuel pressure and the fuel pressure regulator. If the regulator is bad, it could be allowing fuel into the intake through the vacuum line. Take the vacuum line off the fuel pressure regulator and see if that smells like fuel.

 

[Uncle Gump]

Need to check fuel pressure and the fuel pressure regulator. If the regulator is bad, it could be allowing fuel into the intake through the vacuum line. Take the vacuum line off the fuel pressure regulator and see if that smells like fuel.

The 07 SOHC has a returnless fuel system and the regulator is part of the in tank sending unit.

So it cranks and won't start...

Do you have spark?

If you're cranking and it won't start... it makes sense you would smell fuel... you're flooding the engine.

 

[Curious Hound]

The 07 SOHC has a returnless fuel system and the regulator is part of the in tank sending unit.

Of course. Engineers thought it was too easy to work on the regulator when it was under the hood, on top of the engine and easy to access. Can't have that. Let's put it somewhere that's difficult to access.

Anyway. I was wrong. Sorry.

 

[kwhitley054]

Ok so I have fuel to the rails and it has the spark. I paid a mobile mechanic to come out and look at it to see what i may have missed. He put his OBD II up and first tells me that i have a PATS code coming up. Told him that I fixed that problem Told him that i replaced the PCM, fuel pump, the ring and what goes with rebuilding on engine. Except i did not change any sensor. The mechanic runs his OBDII again and he tells me that the PATS code is gone and there are no other codes. Now when i put my Forscan up to the truck I do get codes for it. He did show me at my one cylinder I was only getting 60lb of pressure to it. He said that I have to pull the engine back out and pretty much start over.
My question is do I need to pull it out and start over or should I change the crank, cam and knock sensor and would any of those sensor keep the truck for starting.

 

[pjtoledo]

low compression in just 1 cylinder won't prevent starting. it will run rough, but it should start.
rent a compression gauge and check it again. then spray some oil into it and repeat.
if it improves it's the rings, if not there is a valve open or a hole someplace.
regards to the valve, check lash/clearance on that cylinder.


while compression testing remove all plugs, insert only the one you're testing. compare a couple cylinders.

disable the fuel pump during testing.

 

[kwhitley054]

Ok so what 4.0 year would be compatible with a 2007

 

[franklin2]

Ok so what 4.0 year would be compatible with a 2007

2007-2011

 

[pentode]

Ok so what 4.0 year would be compatible with a 2007

Cheapskate here... If you're starting to think of swapping engines, don't give up yet. Stay with fundamentals. If there's fuel (bearing in mind you don't just need fuel, you need pressure too to make the injectors work) and spark, hard to believe you'd have no compression on all cylinders, but as suggested by @pjtoledo check compression. Assuming you have compression, my mind goes to timing.

 

[kwhitley054]

Cheapskate here... If you're starting to think of swapping engines, don't give up yet. Stay with fundamentals. If there's fuel (bearing in mind you don't just need fuel, you need pressure too to make the injectors work) and spark, hard to believe you'd have no compression on all cylinders, but as suggested by @pjtoledo check compression. Assuming you have compression, my mind goes to timing.

Ok say it is the timing. Is there a way to check that and do you know a good way to do the timing becomes I really don't have the means to take it to a shop

 

[lil_Blue_Ford]

Not sure the best way to check timing on an 07 4.0 SOHC, but I do know if the timing system gets messed up on those, the engine has to be pulled to fix the problem. Those used front and rear timing chains and there’s a hydraulic tensioner for both ends. if you do find a way to check the timing and it’s not bad, you may want to change your tensioners, they should get changed about ever 70k

 

[pentode]

Ok say it is the timing. Is there a way to check that and do you know a good way to do the timing becomes I really don't have the means to take it to a shop

I was thinking big picture timing stuff, including the electrical side like your cam and crank sensors, wiring etc. I'm thinking if you're getting spark the ECM is probably happy but I don't know that engine well enough to say for sure. You're not getting any codes at all as of now and you're sure you have the PATS system working properly? (Again I'm guessing if there's spark, PATS must be ok but that might be wrong)

I imagine you had the cam synchro out when you did your rebuild? Any chance it's off one or 2 teeth?