holley runing rich all the time

[juit 34]

He has a ford 302 F150

[barnett468 418]

He has a ford 302 F150

 

you need to know all the info about his engine before you can compare his jetting to yours. i told you what you should do.

[juit 34]

Im on the road with the stang jets 64

 

ill report back

[juit 34]

It runed rich with 64 jets :S

 

But has better response in the city

 

Should i buy a pair of 60s?

 

No boggin or hessitations

 

I didnt do the last step of opening the back plates

[barnett468 418]

your other carb was slightly lean at cruise speed on the afr, what is this one?

 

with no hesitation, changing 4 sizes is way too much.

 

you could clean up a spark plug then drive at around 2200 rpm for 10 - 15 minutes then posts a before and after photo of it.

.

.

Edited November 15, 2014 by barnett468

[juit 34]

Well i went from 54 to 64 for this test so prolly 58 would be a good size?

 

At idle is rich - ideal but on the rich led for seconds it goes on the ideal zone

On the 4160 was stuck on the rich side

[barnett468 418]

Well i went from 54 to 64 for this test so prolly 58 would be a good size?

 

At idle is rich - ideal but on the rich led for seconds it goes on the ideal zone

On the 4160 was stuck on the rich side

 

with no hesitation, changing 4 sizes is way too much.

 

you could clean up a spark plug then drive at around 2200 rpm for 10 - 15 minutes then post a before and after photo of it.

 

 

Your 4160 would have been lean at idle too if you turned your fuel mix screws in.

 

This one "should" go rich if you turn them out.

.

Edited November 15, 2014 by barnett468

[juit 34]

Your 4160 would have been lean at idle too if you turned your fuel mix screws in.

 

This one "should" go rich if you turn them out.

.

 

I never could make it go lean with the mixture screws, it will shut off or stumble a lot

 

this one with hi vacuum runs way better

 

also with the bigger jet it feals like a efi car

 

with the smallest will hessitate a lil but feal very crisp

 

the 4160 felt great but this one feals better I dont know how to explain it

[barnett468 418]

the 4160 felt great but this one feals better I dont know how to explain it

 

ok, thats a good thing.

[juit 34]

Ordered a 56 58 jets from jegs

[barnett468 418]

Ordered a 56 58 jets from jegs

 

why, i told you those are too small?

[juit 34]

your other carb was slightly lean at cruise speed on the afr, what is this one?

 

with no hesitation, changing 4 sizes is way too much.

 

you could clean up a spark plug then drive at around 2200 rpm for 10 - 15 minutes then posts a before and after photo of it.

.

.

 

??? Yo told me tha was too much 4 jets, im at 64 its too rich

 

I wanted to lower it to 60 from 54

 

 

 

Maybe i got it wrong :S

[juit 34]

ok bought 60 62 jets I hope I can return the other ones :S

[barnett468 418]

??? Yo told me tha was too much 4 jets, im at 64 its too rich

 

I wanted to lower it to 60 from 54

 

 

 

Maybe i got it wrong :S

 

what i told you was that your car finally ran flawlessly and noticeably faster than it had after around 180 posts and that you would have to go thru the nightmare of jetting from scratch if you put the avenger on and this is exactly where you are now.

 

i told you that based on YOUR description/information, that changing more than 4 jet sizes would be too much . . the jets go up by 1 number at a time, not 2 . . 64 minus 4 = 60.

 

i also said you should run the jets from your old carb . . this is because they will be about perfect for this carb too . . well you stuck the front ones in and they are just about perfect which is no surprise to me but now you want to go down 6 sizes...ok.

 

my suggestions are based on your info . . it your info is inaccurate or if i not understand exactly what you are saying, then my suggestions will be inaccurate . . this i guarantee, lol.

.

Edited November 16, 2014 by barnett468

[juit 34]

Gotcha, anyway i bought a downsize kit,

 

64 is way bigger than the 4160 its rich all the time exept idle

 

Thats why i wanted to land on a 60

 

The 54 on the avenger is too lean at cruising speed exept at idle

Edited November 16, 2014 by juit

[barnett468 418]

Gotcha, anyway i bought a downsize kit,

 

64 is way bigger than the 4160 its rich all the time exept idle

 

Thats why i wanted to land on a 60

 

The 54 on the avenger is too lean at cruising speed exept at idle

 

i said to put the jets from your 4160 into the avenger, i thought they were 64 because you said 64 in your last post . . this is the problem . . if i don't know what you are saying. i will give you wrong suggestions . . i'm sitting behind a computer, i can't see or hear your car run and i can't drive it.

 

what are the jets in your 4160?

 

what is a downsize kit?

.

Edited November 16, 2014 by barnett468

[juit 34]

I have 64 65 and 54 jets on hand

My kit is 54 56 58 60 62 jets i bought online

 

:)

[barnett468 418]

 

what are the jets in your 4160?

......................

[juit 34]

65 jets

[barnett468 418]

65 jets

 

ok well your other carb should use jets that are the same or at least within 2 of that size.

[juit 34]

the avenger is using at the moment 64 I have an extra set of 64

 

with this is running rich

[1969_Mach1 333]

ok well your other carb should use jets that are the same or at least within 2 of that size.

 

I've never worked on an Avenger, but don't forget, is possible the Avenger carb has smaller air bleeds and possibly smaller or fewer emulsion bleeds than the older 4160. Those will cause it to run richer than the older 4160 when using the same main jet size that was in the older 4160.

[barnett468 418]

I've never worked on an Avenger, but don't forget, is possible the Avenger carb has smaller air bleeds and possibly smaller or fewer emulsion bleeds than the older 4160. Those will cause it to run richer than the older 4160 when using the same main jet size that was in the older 4160.

yes, thanks for the info and i am aware of that but they are not going to be 10 jet sizes different . . his other carb that ran perfectly had 65's . . he started with 54's in the avenger and it had a hesitation, lol.

[1969_Mach1 333]

I hate to say, but people that work with Holley carbs and from what I've read state if you need to rejet by more than a three sizes it's probably the wrong carb for the application. I wonder if somebody else already rejetted this Avenger leaner than from Holley to try to tune it for another motor? Juit may want to check the stock jetting in the back of his Holley book.

[barnett468 418]

I hate to say, but people that work with Holley carbs and from what I've read state if you need to rejet by more than a three sizes it's probably the wrong carb for the application. I wonder if somebody else already rejetted this Avenger leaner than from Holley to try to tune it for another motor? Juit may want to check the stock jetting in the back of his Holley book.

 

yes good point, his avenger does not come with 54 jets if i remember correctly.