vapourlock on xe351 - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
LinkBack Thread Tools Display Modes
post #1 of 5 (permalink) Old 02-15-05, 12:48 AM Thread Starter
badxe's Avatar
Join Date: Feb 2005
Location: christchurch
Posts: 2
vapourlock on xe351

hi there i seem to be having some probs with the carb on hotter days , its alright on the open road , but when your in town idling around and give it the boot it will go alright for 7-8 seconds and then starve for fuel , its not a fuel pump or line prob as it is fine when thrashing the hang out of it on the track , im picking the carbs getting too hot idling around and locking. has anyone struck this before and if so what have they done to lessen the effect or stop it , your inputs are appreciated

badxe is offline  
Sponsored Links
post #2 of 5 (permalink) Old 02-15-05, 01:48 AM
Registered User
TruBlu351's Avatar
Join Date: Apr 2003
Location: Newcastle
Posts: 2,398
Re: vapourlock on xe351

With flames like that coming from under your bonnet, there's probably more to the problem that vapour lock

I got this a lot in my XD on hot days with my older carb/manifold setup. I'd let it sit for a few minutes, then it would be AOK.

The one key thing to help you is a carb spacer. This stops the heat transfer between the manifold and carb, therefore reducing fuel heat/boil and the resulting vapour lock.

DON'T use an aluminium or metal spacer as these conduct the heat really well! The best spacers are made from plastic or wood. I don't recommend you whip one up out of chip board!! Look on "ebay motors", I picked up a new four hole 2" job for US$22 +p/h. With your bonnet clearance, you'd probably be best suited to a 1" tall one.

Vapour lock gone.

XE Falcon
393 Tremec TKO 9"
TruBlu351 is offline  
post #3 of 5 (permalink) Old 02-15-05, 04:55 PM
Registered User
grey_esp's Avatar
Join Date: Sep 2004
Location: W.A.
Posts: 337
Re: vapourlock on xe351

I think holley do a card bord type one that is realy thin (only about 5 or 10mm) could try one of those first.

Pics are post on
grey_esp is offline  
post #4 of 5 (permalink) Old 02-15-05, 05:18 PM
Registered User
frdpwr's Avatar
Join Date: Aug 2004
Location: melbourne
Posts: 596
Re: vapourlock on xe351

ur fuel line mite run near ur extractors and on hot days it may be shrinkin ur fuel line making less fuel getting thruogh and making it starve........but this is only a guess

XE ESP 416w Injected 342rwk
frdpwr is offline  
post #5 of 5 (permalink) Old 02-19-05, 10:06 PM
Registered User
Join Date: Dec 2004
Age: 43
Posts: 359
Re: vapourlock on xe351

i had a problem like frdpwr suggested on th xd
the 351 was where a 4.1 should have been
the 4.1 fuel line originally came in the engine bay behind the wheel
the v8 line should come in in front of the wheel
nobody changed this when doing the engine swap and it would boil the fuel every now and then and pose a bit of trouble , it took me about a month to figure it out
pinkbits is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > The Garage - Tech Forums > Engine Specific Tech > Cleveland Tech

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome