1970 Ford Galaxie carburetor problems

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
IT should hold around 17 at an idle. There has to be a leak or weak compression.
Was this
answer
helpful?
Yes
No
Thursday, October 10th, 2013 AT 8:55 AM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Yeah, its not a small leak either, and I know if it was the carb or intake the reading would just be low but steady, this was no where near steady
Was this
answer
helpful?
Yes
No
Thursday, October 10th, 2013 AT 9:14 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I can't remember what you actually found when you checked compression. Was it low? The way you described it, I would say you have some burnt valves or they aren't closing quickly enough ( maybe worn springs)
Was this
answer
helpful?
Yes
No
Thursday, October 10th, 2013 AT 9:17 AM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Well I did something I really didn't want to do, I called my dad to take a look at it, he was a professional mechanic for 20+ years, he came over and looked at it, he did a few things and checked timing, then noticed the in line filter was clogged, we took it out, cleaned it (broke the glass on accident so had to get a new one) and tried to start it, there was no gas getting to it, so we pulled the dip stick and it caught fire, so we both determined that the fuel pump was going bad and then finally went out, which would explain all of it, going to replace everything and see if things work
Was this
answer
helpful?
Yes
No
Sunday, October 13th, 2013 AT 11:22 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
What caught fire?
Was this
answer
helpful?
Yes
No
Sunday, October 13th, 2013 AT 7:19 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
The oil, the fuel pump went completely out and gas poured into the oil, so we put a lighter to the dipstick to do a quick test, and the oil/gas mixture that was on the end of the dipstick caught on fire, therefore, fuel pump, just sent the radiator off to get a hold in it fixed, and when it's back i'll tweak a few things and it will be ready to go (hopefully)
Was this
answer
helpful?
Yes
No
Tuesday, October 15th, 2013 AT 11:35 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Let me know how things go.
Was this
answer
helpful?
Yes
No
Wednesday, October 16th, 2013 AT 8:27 AM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Well it's starting much better now, but still misfiring allot, I did a vacuum test to see and the vacuum was very low and staggering (roughly at around 5 psi) so I tried adjusting the carb. Nothing, well I did another compression test. Just to see, and i've found 1=120 2=110 3=105 4=110 5=115 6=110 7=0 8=0 my guess is a blown head gasket, any idea?
Was this
answer
helpful?
Yes
No
Thursday, October 17th, 2013 AT 11:34 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Wow. 7 and 8 are at 0 psi? It sounds like you have a stuck valve or something like that. If it was a head gasket, you would still have some compression.
Was this
answer
helpful?
Yes
No
Thursday, October 17th, 2013 AT 6:27 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
True, but I redid the valves and still nothing, I checked the compression 3 times and all three came up the same, I really don't want to have to rebuild the engine, and the oil isn't milky or anything, right now i'm not sure
Was this
answer
helpful?
Yes
No
Friday, October 18th, 2013 AT 12:53 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Oh yeah and after I redid the valves I noticed that the carb had a major backfire coming out of it, so you're probably right on the stuck valves
Was this
answer
helpful?
Yes
No
Friday, October 18th, 2013 AT 12:54 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Let me know what you find.
Was this
answer
helpful?
Yes
No
Friday, October 18th, 2013 AT 5:18 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Still nothing, I put some head gasket/block repair in the radiator to see what it would do just for the hell of it, and nothing so far
Was this
answer
helpful?
Yes
No
Saturday, October 19th, 2013 AT 3:16 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I never had any luck with that stuff. If you have 0psi in those cylinders, there is something major wrong.
Was this
answer
helpful?
Yes
No
Saturday, October 19th, 2013 AT 4:05 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Yeah, I figured I might as well try it, hell it was 7 bucks at autozone, but right now i'm thinking it's 2 stuck exhaust valves
Was this
answer
helpful?
Yes
No
Saturday, October 19th, 2013 AT 6:12 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
I agree. I feel is a stuck open valve. Otherwise, you would show at least some compression.
Was this
answer
helpful?
Yes
No
Saturday, October 19th, 2013 AT 6:50 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
Have you removed the valve covers to see if any of the valves appear stuck open?
Was this
answer
helpful?
Yes
No
Saturday, October 19th, 2013 AT 6:51 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Yeah I removed the valve covers and it didn't look like any where, but just for extra measures I tightened down each and every rocker arm again, making sure each cylinder was at TDC, and I noticed something, the manual said to torque them down to 18-20 and when I did I noticed that some of the push rods wouldn't move when torqued down that far, but most others would, the cylinders with the highest compression had no trouble torquing and still being able to turn, but the 7 and 8 cylinder and 3 wouldn't budge even the slightest when torqued down, so I backed them off until they were able to move, I ran the car for a little bit and it did a hell of allot better, but I removed the valve cover again and noticed that the nuts had started to come off, meaning that they weren't tight enough, however they were the tightest they could be and still have the push rods turn, so it got me thinking that maybe the valves are the problem, but its not the valves causing the problem, what if it is the lifters and they just got stuck, so I cranked the engine with the covers off and well what do you know 3 valves were staying down
Was this
answer
helpful?
Yes
No
Tuesday, October 22nd, 2013 AT 10:46 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,755 POSTS
That's what I thought. Tell me this, is it the valves that are staying down by themselves or is the lifter not releasing so they can close?
Was this
answer
helpful?
Yes
No
Wednesday, October 23rd, 2013 AT 5:37 PM
Tiny
PAPAJOHNSLICE
  • MEMBER
  • 108 POSTS
Well from what I can tell they don't move at all, the arms don't rock, the spring doesn't compress, nothing
Was this
answer
helpful?
Yes
No
Thursday, October 24th, 2013 AT 10:56 PM

Please login or register to post a reply.

Sponsored links