searching for the cause of my high fuel pressure i took out the tank, blew out the hoses in the tunnel, cleaned them with a coat hanger, no obstructions, no gunky build up.noticed when i removed the fuel return connection on the tank, the new epoxy hole on the inside was about 1/2 the diameter as the port itself. approx the size of a drinking straw (1/4") as opposed to about 5/8" could this be causing the high pressure?
question 2 po had fuel pump hot wired to the coil ( no ground wire) is there any way of picking up power from the fuse box or relay so i do bbq the car? moving the pump up to the front and don't think i can snake a wire thru the tunnel. original harness wires are not in the original spot

Sup Chef.

You can tap power off of your relay board on the drivers side where it orriginally came from. Pin 13 of the 14 pin connector on the forward most plug. It is the pin most forward and outboard. Ground is just to the chassis.

Oh and yes a blockage of that size could definetly increase your pressure. Think about it, 5/8 vs 1/4 is a difference of 2.5 times. If it were an artery you would definetly be feeling it. Time to take out the small round file and remove some of the excess epoxy being carful not to rub through to the metal. Clean up and retry.

i.m guessing i will need one ofnthose round relay things thats also mia

Easy enough, you probably have a spare inthe board. You can use one from the headlights to test it if you want. I know someone near you has to have spares.

No problemo el chefo.

Run a long wire to the coil and when I see you we can shorten it to the board. I will provide the relay.

I'd like to see a picture if possible.

Chef, did you ever verify if your gauge was shot or not?

Thinking about your shrinkage of hole, I don't recal there being a 5/8" port, only a bung perhaps of such size under your tank.

pics would help

5/8 was a guestimate will post pics today before i start filing.

Cool, its good to have Mark looking at the pics too....its not like he messes with /4 stuff everyday or anything

ok got pics grey area inside of return port is what i think is the new epoxy and the reason i drink so much now. oops sorry i mixed in a pic of my daily driver

Chef - howsabout we get together w/Leo & Ray & whoever else is willng to lend a hand so as to get this best sorted once and for all (or until the next thing breaks...)???

Hey Rich,
I think that that is why Mark was asking for pics. IIRC, the hole there is normal (been a while since I looked at it). I guess I was expecting something of a protuberance in the hole making it smaller.

So to recap:
-tank passages clear (check)
-Return line clear (check)
-Fuel pressure gauge busted (check?)

Other than the potentially erroneous fuel pressure readings from a bad gauge, what other symptoms did you have? You mentioned it ran great and that it may have been smoking (maybe rich, maybe oil, maybe valves). Your answers will lead us to the more correct course of action. It appears at this point that we have not conclusively proven that there is a fuel pressure problem.

with Pete, if time permits I want to come up tere and help out.

What is the red car?

Not his

Here's a top view. Old tank that was resealed. Return line comes up under the baffle, which is the other hole you see when you look through from the bottom...

Jim K.

Click to view attachment

Sorry Dr. but I disagree, it doesn't seem to me that the tank passages are clear especially the return one. The return fitting is tapered at the end, but the passage itself is a nice clear hole, doesn't look that way to me. It's hard to tell from the picture but is there even a hole there any more, or is it completely blocked by the epoxy?

While you're at it Chef, change the fuel screen from the other fuel port, the epoxy probably screwed up that thing also.

The red car pictured is a Maserati Spyder, the poor man's Ferrari

Edit: From the previous picture I'm not sure anymore if what I'm saying is correct, maybe there are variations in the gas tank design

Mine looks like that and I am ASSUMING that the good chef checked the passage for clarity.

Heck Rich, you should be able to see/hear the fuel returing to the tank with the pump on and a little gas in the there.

Guess my memory failed me, sorry for any mix-up.

Its all good man, I don't know it all either.

checked the return hole ,it goes through. but i don't have one of the socks. unless it fell in the tank when i took out the lines. how important is it? bought a new fuel test guage other one fell into a wall. answer to the dr's question car would lose power @ 4000 rpm's but pressure was @31psi. did valves got a different pump and car ran rich, lots of black smoke but lots of power red line in every gear but very low idle and stalling checked pressure it was 70 plus. then could't get it started again.

Ya sure, "it tripped."

You do not have to run with a sock, but IIRC the spacer that the bottom of it provides, or an analog, is necessary. Since you have not reported fuel leaks you are probably fine, but if you can put one in it is cheap and easy insurance against particles.

So, what pressure does this gauge say you are running?

[quote name='Dr Evil' date='Jul 12 2006, 01:55 PM' post='726077']
Ya sure, "it tripped."

doc what do you mean tripped? won't know pressure till tomorrow after i move the pump up front and put it back together. going to test it out of the gas gan for return and pressure before i put the tank back in. about the spacing the sock provides would a washer work? it will probably take a week to get a new sock.

If it were all together befor without a leak you dont need another spacer. It was a looong time ago when I worked on mine and I needed to use a spacer (unless I am thinking of something else. Studing for med school has made me forget or mix up a lot).

The "it tripped" was for your camment about the old gauge just "falling" against a wall

Good call on the gas can (dont smoke in your garage or near it).

Black smoke can also be caused by fouled plugs. How is your distributor, plugs, etc? There are more causes, but I am drawing a blank.

Black smoke can also be caused by fouled plugs. How is your distributor, plugs, etc? There are more causes, but I am drawing a blank.
[/quote]
dizzy is new as are points and plugs. plugs had a liitle black on them but didn't seem too fouled. may i adress the jury one more time. can i blow compressed air thru the fuel rails to make sure they are not blocked? press reg is in a box so i won't upset it. as far as the guage trippin, yeh thats it and anyone who's says otherwise is lyin.

My thought on this, using air will only tell you if the circuit is not completely blocked, it won't tell you if there is a partial obstruction. Having a fluid go through the same thing may yield different results...

I think the Dr. said at one point that you should run fuel into a empty can starting with a small circuit and keep adding lines untill you catch the one with the pressure issue. I would stick to that plan.

concerned about partial blockage in the tunnel. if i started with2 gas cans each with 1 gallon of gas and pumped from can a to can b and then back from can b to can a to complete the circuit leaving the engine out of it. would i end up with equal amounts in each can at the end? or does the pump suck harder than it blows? i heard that somewhere. or have a lost my mind?

Would it not be easier to put both send and return in the same can? It would work sufficiently and you could check the tunnel lines that way provided you had enough fuel to prime the circuit and a little extra for flow.

What did you decide on changing the lines to stainless? eventually?

What did you decide on changing the lines to stainless? eventually?
[/quote]

here is my plan (1) keep obsessing over this and try to get the d-jet perfect then
(2) if i get the other engine and it's a 2.0 rip out this one put in steel lines and switch to carbs. has anyone ever tried to make the holes in the center tunnel larger and fabricating a new grommet out of i don't know old sneakers? this may be the tequila talking

Good lord, I hope I am able to come up and stop you before you try any of this sneaker BS.

We're gonna read about this in the papers tomorrow morning...

i'm hoping to make cnn too. seriously, sneakers aside is it so crazy to make those holes 2" x 4" and make a grommet out of 1" fire resistant black rubber, with an inside groove so that it pops in? these areas are not structural. this stuff is common in commercial kitchen mats. 2 years of culinary school is starting to pay off. wheres that bottle of patron did you guys take it.

Isn't there enough holes in your 914 allready

Other people have run steel lines through the tunnel using the stock holes, so it shouldn't be a problem for you eihter, especially if you're doing it without the engine in the bay.

And why would you go for carbs, now that you're learning everything about the FI.

I think you should stop sniffing the sneakers, call your doctor, you need medication

why carbs? quick story. last week a friend came over i haven't seen in a year . told him i bought a 914 and he says oh i have one of those engines in my warehouse. guy took it out of his car 9 years ago and never came back. has 2 webers on it . do you want it? i said well if its in the way i'll take it. the d-jet is making me nuts. carbs have got to be easier. is it me or are they putting less tequila in these bottles than they used too. also is there any other group of guys who spend this much time on line and aren't looking at porn?

don't give up. Heck when your done your gonna be my go to guy for fuel problems


Oh hey remember I said a guy at work is going to the culinary arts school. Kinda cool now because he is bringing in the food they make that day. Had ostrich steaks yesterday and lamb chops today.

Mmmmm, lamb. So young, tender and basically defensless

I have the brake line switched to fuel line sin my center tunnel and you dont need to goof with the holes. Put the wisk down cookie!

Carbs easier? There in a 914, right?

Actually, I know very little about carbs so I can't talk smack.

I'm buying you some duct tape for xmas. That'll fixer!!!

Seriously if I have to tow it this weekend I will.

This whole thing is making me want some of that Takillya.

He try it in the fuel lines

Waiting to hear back from Ray about garage space so we can slay this fuel beast this w'end (looking @ Sunday AM).

Tequila welcome but I prefer old fashioned cheap canned bear - thats just the midwest in me.

[quote name='ptravnic' date='Jul 13 2006, 03:56 AM' post='726612']
Waiting to hear back from Ray about garage space so we can slay this fuel beast this w'end (looking @ Sunday AM).

sunday a.m. bad for me . have to do a cooking show on t.v. sat. afternoon and today are my only windows this week.

I second the tequilla craving. I havenet had a margarita, or anything fun in a while. This weekend should prove interesting

Some of Joe Sharp's Cazadores would kill the pain.

o.k. half times at the 914 bowl. moved the pump to the front ran new power back to the engine (off the coil for now will hook to the relay board later) pump is working! now will start putting the new fuel lines in. question doe's it matter about hose length now that it is a shorter run from the tank to the pump and the return to the tank? and does anyone know what this is?

Those are the hookups for the optional center console.

Hose length should be long enough to reach its destination while leaving little slack for service later.

good news pressure problem over finally finished and ready to drive. anybody see anything i missed. be back when it doesnt start. thank you all for your help.

Glad you got the car running . Its a good looking car now you neeed
a nice set of wheels. Robert 21

Ya missed the air filter and housing

Hey awesome. So now you can bring it to Giants stadium sunday and we can break some parts!