For the archives I have uploaded photos of my recent work to
install a fuel line check valve. The original valve failed
long ago, and since it was part of the fuel pump housing
mounted in the fuel tank on our '93 car, it was much easier
to just insert a new check valve in the line between the
tank and fuel filter.
I am indebted to Win for recommending both the installation
of a check valve and inexpensive parts available from
McMaster-Carr. He also provided details of how he installed
a valve in his car.
I initially installed the check valve at the fuel rail,
along with a new fuel pressure regulator. Cold starting
improved, but I still felt it could be better. When
aerostarflyr told me off-line that he’d learned from a check
valve vendor that the valve should be as close to the tank
as possible, I decided that when I dropped the IRS to
rebuild the differential, I would move the check valve near
the tank. This made a noticeable improvement and cold
starting now requires fewer cranks than it has in many years
(typically just a couple of revs before it fires up).
Thanks for your help, Win and aerostarflyr!
As I recall, Win used a 1/8 in. pipe size check valve. I
first ordered a 3/8 in. pipe size valve but decided it was
just too physically large. I split the difference and
ordered a 1/4 in. valve and was very happy with its size
relative to the fuel lines in our car. Here are the parts I
ordered from McMaster-Carr (www.mcmaster.com) (typical
Brass Check Valve, Fluoroelastomer Seal (important for use
with gasoline), 1/4 in. pipe size, Catalog No. 7768K56
Brass Hose Barbs, 5/16in.hose size, 1/4in. pipe size,
package of 5, Catalog No. 5346K53 $9.25 U.S.
By the way, Bryan N has posted an excellent procedure for
testing both the check valve and fuel pressure regulator.
If you don’t want to go to the trouble of building a test
rig like Bryan’s, then I strongly recommend that you replace
the fuel pressure regulator at the same time you install the
check valve. It will do no good for the check valve to
prevent pressure from being relieved back toward the tank if
the fuel pressure regulator has failed and relieves the
pressure anyway. I shopped around and found a new Bosch
fuel pressure regulator for $62.00 U.S. from a seller at
Amazon (typical disclaimers). There were even more
affordable FPRs listed on ebay, from manufacturers that
included Beck Arnley, SMP/Standard, Airtex and others, but I
decided to spend a little more for the Bosch.
I hope the photos are helpful.
Don B : '93 VDP Flamenco Red 189K : (ex-'88 Sovereign)
Franklin, TN, United States
–Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]–
Visit the Jag Lovers homepage at http://www.jag-lovers.org for exciting services and resources including Photo Albums, Event Diary / Calendar, On Line Books and more !