New guy, need some help please!
New guy, need some help please!
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ignis04sport

Original Poster:

10 posts

101 months

Friday 29th June 2018
quotequote all
Hi guys,
Just signed up. Hope I'm in the correct place to get some much needed advice.

So I bought myself a little project race/rally car.
Ignis sport, 1.5vvt dohc.

Until the time came to strip out the fuel tank and replace it with a 15ltr fuel cell and a red fascet fuel pump the car started on the button and was well up for a rip any time you wanted. I'm emphasizing the fact it ran a dream.

So today I have the fuel cell in the boot, pump running off original wiring, primes and switches off till ignition.

Upon ignition the car starts but swiftly starts to judder. I think the best term might be starvation. (I'm a car lover, not a mechanic) so I kill the engine. Try again, it starts, then won't idle etc etc.

So I checked no leaks, the pump is getting served via gravity, pump is knocking away happily, as far as I'm aware a pump works or doesn't work, zero in between? ..I wondered if enough fuel was getting to the fuel rail, popped off the hose, into a bottle and it happily gushed in on a couple of primes.

Stupid question time. Upon taking off the fuel tank, the pipes, flow and return. There was a black / green push on clip, this is the flow, correct? And the return was just a pushed on pipe, had no fixing on the pipe.

I wondered if it was air flow, I opened a bolt on the top of the alloy tank, it made no difference. I'm awaiting a connection to fit a breather pipe.

So car started 100%, now doesn't ...the car is the same but the fuel source isn't. It's getting fuel but is it too much or too little? Etc etc.

I checked and ensured the pump is getting a 12v supply. It is, I'm just needing some assistance to tell me how stupid I'm being!

Is there anyone with brains to burn that can help? Please do try, little or loads of help.

Happy Jim

1,080 posts

270 months

Friday 29th June 2018
quotequote all
The facet red top is a low pressure fuel pump suitable to fill a fuel cell or swirl pot or fuel a carb, but no way can it provide the pressure needed for a fuel injected engine.

Where’s the old pump?

Jim

Andyjc86

1,149 posts

180 months

Friday 29th June 2018
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It sounds like you pump isn’t man enough for the job. What’s the flow rate of the new one vs the old one?

Happy Jim

1,080 posts

270 months

Friday 29th June 2018
quotequote all
Flow will be fine.

Facet runs at 6psi, an EFI pump runs at 44 or 58 psi (3or 4 Bar) depending

Mignon

1,018 posts

120 months

Friday 29th June 2018
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ignis04sport said:
I'm just needing some assistance to tell me how stupid I'm being!
Mind bogglingly. You've just replaced an 80 psi fuel injection fuel pump with a 6 psi carburettor fuel pump. No f***ing wonder it won't run.

bearman68

4,942 posts

163 months

Friday 29th June 2018
quotequote all
Mignon said:
Mind bogglingly. You've just replaced an 80 psi fuel injection fuel pump with a 6 psi carburettor fuel pump. No f***ing wonder it won't run.
Best say what you mean - none of the beating around the bush.