Yet another weird 2.9 issue....

[rusty ol ranger]

87 Ranger 2.9.

No idea on this one.

Every now and again, no rhyme or reason to it....

Youll be driving along, all of a sudden itll buck/chug 2 or 3 times, the whole tune of the motor changes. It loses power, it gets quieter, but as long as youre in the throttle it runs smooth still, untill you let off, then you can hear it missfireing. but doesnt stall. Almost like its running out of fuel, but its not.

This will go on for a couple miles, then it clears up and runs fine. It also runs fine before this goes on.

No codes, no smoke, no odd noises.

Any idea?

 

[adsm08]

How old is the oxygen sensor?

 

[rusty ol ranger]

How old is the oxygen sensor?

About 1 week.

 

[adsm08]

Off the back of the passenger side head is an orange and black wire bolted there by a large eylet. I'd check the integrity of that wire and connection next.

 

[rusty ol ranger]

Off the back of the passenger side head is an orange and black wire bolted there by a large eylet. I'd check the integrity of that wire and connection next.

I will check into that tomorrow.

 

[bobbywalter]

swap one of those on.


its easy.

 

[bobbywalter]

or 3 of these...

even easier.

 

[adsm08]

or 3 of these...

even easier.

This would be so much easier on the 2.9. The lower intake is already set up nicely to accept a triple carb setup. He'd just have to get some adapter plates made up.

 

[Craig0320]

This would be so much easier on the 2.9. The lower intake is already set up nicely to accept a triple carb setup. He'd just have to get some adapter plates made up.

Funny, it almost looks like a four wheeler carburetor.

 

[rusty ol ranger]

swap one of those on.


its easy.

Trust me...if it didnt involve a custom intake it woulda been done already.

And mutiple carb setups are a bitch.

 

[Craig0320]

But you could install a high rise and cut a hole in the hood to look cooler.

 

[adsm08]

Trust me...if it didnt involve a custom intake it woulda been done already.

And mutiple carb setups are a bitch.

I was reading a thread from a UK forum the other day, guy said his buddy put a 2.8 intake and distributor on a 2.9. He just had to swap the cam gear on the distributor to make it spin the right direction.

 

[rusty ol ranger]

I was reading a thread from a UK forum the other day, guy said his buddy put a 2.8 intake and distributor on a 2.9. He just had to swap the cam gear on the distributor to make it spin the right direction.

Last i knew a 2.8 intake wont even bolt to a 2.9 head.

 

[adsm08]

https://www.fordpower.org.uk/index.php?topic=10190.0

Post #5.


There may be some super early version of the 2.9 heads where it does work. RockAuto lists one set of intake gaskets for the 85 2.8, one set for the 87 2.9, and each of those for the 86 2.9.

 

[bobbywalter]

it wont.



the 2.9 is already a hi-rise.



put a rubber plumbing cap on the tb opening...



cut hole in top and build adapter....with a tin diffuser bridge over the 3-4 port directly below the carb.

you can do this with a roll of gasket material...some sheet metel...a hack saw...drill and some hardware...maybe a lil epoxy.


bridge the high pressure pump with a fuel filter and unplug it...


if i were a carb guy....cake job.

that or put a propane carb on the throttle body and run propane.


unfortunately....it wont ever run as good as efi.

and trouble shooting mechanical issues is a completely different set of headaches.