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73-87 Chevy _ GMC Trucks => 73-87 Chevy & GMC Trucks => Topic started by: p7387 on April 27, 2010, 02:36:19 am

Title: 87 TBI fuel line hoses?
Post by: p7387 on April 27, 2010, 02:36:19 am

1987 TBI new tank installation ....
is it necessary to use the fuel injection rated fuel line hose or is regular hose acceptable?
the FI rated hoses are 5-6 times more expensive. is the FI rated hose more important for the 3/8 feed?

Title: Re: 87 TBI fuel line hoses?
Post by: 1981 ss chevy on April 27, 2010, 08:33:44 am

When doing some work on a tbi in the past i bought the cheaper less strong line and it blew a hole in it.  Best to go with the FI rated.  Im pretty sure all the fuel works on a specific pressure thats higher than the older carbed trucks.

Title: Re: 87 TBI fuel line hoses?
Post by: Captkaos on April 27, 2010, 09:51:25 am

YOU MUST use FI hose on Fuel injection applications.

Title: Re: 87 TBI fuel line hoses?
Post by: p7387 on April 27, 2010, 11:12:50 am

ok-
thanks for stopping me from making a mistake !

Title: Re: 87 TBI fuel line hoses?
Post by: Jim Rockford on April 27, 2010, 12:01:55 pm

TBI only runs a max of 14PSI  its not much more than a carb pressure. Now if it was a vortec or TPI or LT1 I would use fuel injection hose.

Title: Re: 87 TBI fuel line hoses?
Post by: Captkaos on April 27, 2010, 02:39:05 pm

Carbs run 5-7lbs, TBI is double that at 12-14lbs.
There is a reason they make EFI spec hose.

Title: Re: 87 TBI fuel line hoses?
Post by: autorepr on April 28, 2010, 07:59:08 am

Good Gravy!   It's not that expensive esp. if your only replacing the 12" or so of the factory line. If you have to run front to rear you should run as mch as you can in hard steel line (like brakeline) then connect the ends with short pieces of F.I. spec rubber line. If your crunching numbers factor in the cost of replacing your truck when the carb spec line starts leaking and it burns to the ground.