Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Welcome to Ford-Trucks Forums!
Welcome to Ford-Trucks.com.

You are currently viewing our forums as a guest, which gives you limited access to view most discussions and access our other features. By joining our community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join the Ford-Trucks Forums community today!





 
Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 09-03-2014, 10:19 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Popping from carb after cam swap

So I put a new cam valve springs and double roller timing chain in my truck ( braket master II 544/544 lift 292/292 duration 108 lobe separation ) in my truck I can't get it to run well at all now it keeps poping out of the carb and shakes like it's missing any ideas timing is set to 10 btdc
Reply With Quote
  #2  
Old 09-03-2014, 10:29 PM
wyckedcombo17's Avatar
wyckedcombo17 wyckedcombo17 is offline
Posting Guru
 
Join Date: Sep 2009
Location: Suburbs of Chicago
Posts: 1,150
wyckedcombo17 is gaining momentum as a positive member of FTE.
Either you flattened a lobe or you put the cam in incorrectly. Did you line up the timing marks when you swapped cams?
__________________
Dan W.
TRIALS AND TRIBS

1978 F-250 412/NP435/NP205/D44 D60
Reply With Quote
  #3  
Old 09-03-2014, 10:35 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Quote:
Originally Posted by wyckedcombo17 View Post
Either you flattened a lobe or you put the cam in incorrectly. Did you line up the timing marks when you swapped cams?
Yes Iined up the marks and I had some one double check just to make sure
Reply With Quote
  #4  
Old 09-03-2014, 10:36 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
What's the likely hood of bent push rods. Is that more of a chance than wiping a brand new cam
Reply With Quote
  #5  
Old 09-03-2014, 11:36 PM
OldMetal's Avatar
OldMetal OldMetal is offline
Elder User
 
Join Date: Feb 2008
Location: US/Baja border
Posts: 580
OldMetal is gaining momentum as a positive member of FTE.
First thing I would check is the wiring order, all it takes is to be one off
Reply With Quote
  #6  
Old 09-03-2014, 11:43 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Firing order has been checked 4 times between 3 people there's a preaty bad exhaust leak I forgot to mention aswell all the vacume lines have been checked and vac plugs have been replaced as well as the carb base gasket
Reply With Quote
  #7  
Old 09-04-2014, 12:03 AM
co425's Avatar
co425 co425 is online now
Posting Guru
 
Join Date: Oct 2010
Location: Sacramento Ca area
Posts: 2,413
co425 has a great reputation on FTE.co425 has a great reputation on FTE.co425 has a great reputation on FTE.co425 has a great reputation on FTE.co425 has a great reputation on FTE.
Any chance you put the distributer back in 180* out???
__________________

1974 F250 4X4
Cummins 12v, NV4500 , np205, Dana 60 Front, GM 14 bolt rear.
Cummins swap/truck upgrade thread
http://m.ford-trucks.com/forums/show....php?t=1181279
LIBERALISM IS PESTILENCE!!!
Reply With Quote
  #8  
Old 09-04-2014, 12:29 AM
tjnthesky tjnthesky is offline
New User
 
Join Date: Jul 2014
Posts: 21
tjnthesky is starting off with a positive reputation.
How is the compression?

Rule of thumb, check the compression. I did some work on an engine and had to go pick up a load about 45,ooo lbs. As I came to hills without a load it would start to miss. So I thought better see if a local shop could pin point my problem quickly. After spending 4 hrs shop time it got worse. Limped home and pulled the heads. Several mechanics said the guides were worn too far to use. Instead I grabbed some other heads I had knurled the guides a little and ground the valves. That was 10 years ago and still runs great. Just disturbing the valves a little could have burnt one or several. Also the valves may not be seating correctly. Easy enough to just check compression. My engine coughed through the intake just a little at first then continued to get worse. Thanks
Reply With Quote
  #9  
Old 09-04-2014, 01:17 AM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Quote:
Originally Posted by co425 View Post
Any chance you put the distributer back in 180* out???
No that was also checked
Reply With Quote
  #10  
Old 09-04-2014, 06:33 AM
somethingclever somethingclever is offline
Senior User
 
Join Date: Dec 2008
Location: SW PA
Posts: 241
somethingclever is starting off with a positive reputation.
pull a valve cover, rotate the engine so the cam is on it's base circle for each valve, and check to make sure all rockers are tight.

did you use zinc additive in the oil, and cam break-in paste supplied with your cam?

Did you test drive the vehicle and if so, how does it pull?
__________________
1979 F250 4x4 - 400, T18, NP205, 3.55 gear, Deaver Springs, 37" BFG M/T's; DRIVER - For Sale
1976 F250 4x4 - FE, NP435, NP205, 4.10 gear, converted to dually dump truck; PROJECT
1979 F250 4x4 Crew Cab - 466, T18, NP205, 4.88, 9" lift, 40" toyo's - FAMILY WAGON
Reply With Quote
  #11  
Old 09-04-2014, 11:16 AM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Quote:
Originally Posted by somethingclever View Post
pull a valve cover, rotate the engine so the cam is on it's base circle for each valve, and check to make sure all rockers are tight.

did you use zinc additive in the oil, and cam break-in paste supplied with your cam?

Did you test drive the vehicle and if so, how does it pull?
I used a hi zinc oil I did not use an additive I dint test drive it I can't even tap the peddle with out it popping
Reply With Quote
  #12  
Old 09-04-2014, 12:55 PM
skidoodave's Avatar
skidoodave skidoodave is offline
Senior User
 
Join Date: Nov 2010
Location: Caledon ON
Posts: 297
skidoodave is starting off with a positive reputation.
Pull the valve covers off and rotate the engine over and watch each valve to see if they are moving. I would measure the movement of each valve to see if they are all the same. If you find one that not opening as much as the others then you may have found your problem

What was your cam break in procedure? A 108 centreline is pretty tight for a truck motor unless it's for competition.

I would suspect you wiped a lobe or 2 off of the cam during break in. It happens a lot..
__________________

Dave
Retro....Where everything old is new again.
78 F150 Short Bed 4x4
2010 F150 SuperCrew Short Bed 4x4
Reply With Quote
  #13  
Old 09-04-2014, 01:02 PM
David7.3's Avatar
David7.3 David7.3 is offline
Posting Guru
 
Join Date: Jun 2014
Location: Oakhust NJ Jersey Shore
Posts: 1,076
David7.3 has a very good reputation on FTE.David7.3 has a very good reputation on FTE.David7.3 has a very good reputation on FTE.David7.3 has a very good reputation on FTE.
Rocker arms too tight? keeping a intake valve open, 292 is a good bit of overlap. did you use new lifters? lots of things to double check, gotta pull the valve covers, do a compression test find out which one it is, or you can pull a plug wire off one at a time and see when the popping stops, that will be the one.
__________________
99 F-350 7.3 PSD 6" superlift springs, 35 toyo load E tires, true trac front, detroit locker rear, 140 gallons fuel, Desiel-site coolant filter, 6.0 trans cooler, BDS trans, Banks billet converter, Bank trans command, Banks turbo housing, wicked II wheel, big head waste gate, Power elbow, EBCV removed, diesel-o-rings in fuel bowl. 203 t-stat,TS Performance tuner, True 4" exhaust turbo back,AIH delete, More to Come when the funds come.
Reply With Quote
  #14  
Old 09-04-2014, 01:40 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Quote:
Originally Posted by skidoodave View Post
Pull the valve covers off and rotate the engine over and watch each valve to see if they are moving. I would measure the movement of each valve to see if they are all the same. If you find one that not opening as much as the others then you may have found your problem

What was your cam break in procedure? A 108 centreline is pretty tight for a truck motor unless it's for competition.

I would suspect you wiped a lobe or 2 off of the cam during break in. It happens a lot..
I will be pulling valve covers today to watch valve movement. Brake in was 20 mins at 2k just like the instructions said if the lobes got wiped what's the next step do I have to buy a new set or is that usually covered by warranty ?
Reply With Quote
  #15  
Old 09-04-2014, 01:42 PM
bluegoose95401 bluegoose95401 is offline
Senior User
 
Join Date: Mar 2008
Posts: 111
bluegoose95401 is starting off with a positive reputation.
Quote:
Originally Posted by David7.3 View Post
Rocker arms too tight? keeping a intake valve open, 292 is a good bit of overlap. did you use new lifters? lots of things to double check, gotta pull the valve covers, do a compression test find out which one it is, or you can pull a plug wire off one at a time and see when the popping stops, that will be the one.
new lifters were used as for rockers being to tight it's a non adjustable valve train I dint switch to the adjustable
Reply With Quote
Old 09-04-2014, 01:42 PM
 
 
 
Reply

Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
price inquiry on a '40 pickup RCrawler 1947 and Older Ford Trucks 1 10-06-2012 01:13 AM
Frenched Headlights 54-4U2C 1948 - 1956 F1, F100 & Larger F-Series Trucks 18 05-12-2007 09:17 AM
Will This Cam Work? ibleedblue1385 Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 3 06-21-2006 09:48 AM
carb problems busterluck 1967 - 1972 F-100 & Larger F-Series Trucks 4 04-09-2005 08:19 AM
camshaft and air conditioning bronco-bud Small Block V8 (221, 260, 289, 5.0/302, 5.8/351W) 11 08-05-2003 09:34 PM



All times are GMT -5. The time now is 09:09 AM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. FordŽ is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup