in for MOT, but broke down a few times on the way!

MostlyMonki

well my Bug with ej20 turbo is in for its mot (wish me luck), but on the wat there it cut out 3 times with what seemed like fuel starvation. I'm hoping it was just that it was low on fuel, as it only happened when i was on a hill (up and down), and I'd only put a fiver in it from a jerry can from empty.

just in case its not that though, anything else you guys can think it might be?

symptoms: cutting out when wide open throttle (if you back off it settles again), ony did it when i was on reasonably steep hills, twice pointing up, once down... might just be a coincidence though!?
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'72 Ratty Bug - Subaru EJ20 Turbo motor.

Joel · Posted: Fri Apr 03, 2009 12:17 pm Post subject:

are u running a surge tank with a lift pump?
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1974 1303 Germanlook Suba-Beetle
Subaru EJ254, BoostR 17", 4 Wheel discs, Topline suspension and A/C

MostlyMonki · Posted: Fri Apr 03, 2009 1:14 pm Post subject:

no, running a stock 60's bug fuel tank, with a high flow aftermarket fuel pump mounted below it. surge tank might be a good plan anyway though...
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'72 Ratty Bug - Subaru EJ20 Turbo motor.

ricola · Posted: Fri Apr 03, 2009 6:11 pm Post subject:

You definitely need some sort of constant fuel supply, with that little fuel I'd be amazed if you didn't have those symptoms, either mod your tank for a swirl pot or fit an external one...
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Joel · Posted: Fri Apr 03, 2009 9:15 pm Post subject:

not trying to put the frighteners up you but you can do serious engine damage to a turbo motor if it starves under boost

even an NA SOHC EJ has dramas with no surge tank definately in a bug but i know someone with a bay that had problems to and the tank is almost straight above the engine

ive just bought a nice stainless steel one for my bug im waiting for to arrive
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1974 1303 Germanlook Suba-Beetle
Subaru EJ254, BoostR 17", 4 Wheel discs, Topline suspension and A/C

MostlyMonki · Posted: Mon Apr 06, 2009 11:34 am Post subject:

hmm, not sure that it's just the lack of swirl pot thats causing me problems. when i picked it up i had similar (but not as frequent) problems, and thats with a completely full tank of petrol.

I've got a feeling it might be electrical, as I switched the rad fan off at one of these "moments" and it seemed to help.... so wondering if the fuel pump is trying to draw more power than its able to (battery/alternator issue maybe).

will investigate some more....
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'72 Ratty Bug - Subaru EJ20 Turbo motor.

hansend23 · Posted: Mon Apr 06, 2009 4:24 pm Post subject:

same problem!i have a stock tank and a baywindow fuel pump.
i havent researched the swirl pot thing.do i need one?what do they do?
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just do it!

ElusiveStranger · Posted: Mon Apr 06, 2009 4:59 pm Post subject:

hansend23 · Posted: Mon Apr 06, 2009 5:08 pm Post subject:

after 74 they are fuel ijection here,sorry.its like a t25.
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just do it!

ElusiveStranger · Posted: Mon Apr 06, 2009 5:18 pm Post subject:

Ahhh ok. Mine was a '78 2l with a stock mechanical pump.

My bay's not running a swirl pot (EJ20 NA) and hasn't had any probs. I did have a 10mm pipe brazed onto my tank though.

MM, check your connectors. My pump (Jag) only uses a 10A
What size feed supply have you got to your pump, the same as the pump inlet? Check filters etc
I know sod all about the turbo set ups but check your vacuum pipes etc.
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The advice you receive on here is worth the paper it's written on.
Your experiences are worth shed loads to others, including the f'ups - live and learn.
Wouldn't YOU rather learn by someone else's mistakes? So would they.

'78 Bay, 2 litre 091 box, EJ20 NA & the ashtray's on the 'right' side.
I don't lean forward for hills any more Grin

Bugger, missed out on "Live fast, die young"

hansend23 · Posted: Tue Apr 07, 2009 3:26 pm Post subject:

i put 10mm on in and out.the return is only 30mm from the feed.
like a type 3.i injected it a few years back.
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just do it!