Fuel Starvation

[Bazstag]

Well my problem seems to of raised its ugly head again, Took the car out for a sunny drive and visit friends, when 10 mins driving the engine started to run slightly rough, seems to happen alot when the throttle is held at cruising, i'm able to overcome this if i keep putting my foot down. After 20 mins at friends house and them admiring the car, turned the key and the engine would'nt fire up, needless to say from the supposed friends. Went under the bonnet and could smell petrol so assumed ignition, took out the spark plug to find it dry, a bit black (so mixture adjustment req') there is a spark. Gave it one final go before calling recovery, pumped the throttle fully and after a few secs started to fire up and managed to drive home.

Does this sound like the needles sticking and crap in the chambers to you guys?

Any info or wise cracks greatly accepted

Baz

[toneil461]

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Baz,

I had a Silmular problem, turned out to be a dirty fuel filter. Replaced and now Ok.

Terry..

[V8 Rumbler]

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Baz I agree with Terry. st thibg to check/change is the fuel filter

[Bazstag]

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toneil461 wrote:

Baz,

I had a Silmular problem, turned out to be a dirty fuel filter. Replaced and now Ok.

Terry

Got a new chrome one fitted Terry, as i've had this problem before i've checked all other aspects relating, fuel pump,breather pipes,inertia switch so i guess its a carb strip. Would'nt of thought it was this though as the previous owner had it serviced in 2006 and stripped in 2007 by a garage in surrey:?, so the invoices say:?

[stustag]

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Never trust any work done unless you did it,saw it done or was done by someone you trust with your life!:?

Sounds like you will have to strip the carbs down, but before you do this take the tops off and check the diaphragms as these do play up from time to time!

Stuart

[Bazstag]

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stustag wrote:

Never trust any work done unless you did it,saw it done or was done by someone you trust with your life!:?

Sounds like you will have to strip the carbs down, but before you do this take the tops off and check the diaphragms as these do play up from time to time!

Stuart

Nice one Stuart, first off i think i'll try Russ's idea, spraying carb cleaner in the fuel inlets, fingers legs and anything elsecrossed

[mad cyclist]

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stustag wrote:

Never trust any work done unless you did it,saw it done or was done by someone you trust with your life!:?

Sounds like you will have to strip the carbs down, but before you do this take the tops off and check the diaphragms as these do play up from time to time!

Stuart

some of the diaghram material perishes in unleaded i have been told, this may be an old wives tail but it was relayed to me by a batchelor!!

[DJT]

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mad cyclist wrote:

some of the diaghram material perishes in unleaded i have been told, this may be an old wives tail but it was relayed to me by a batchelor!!

I too have heard this. I amy be misisng something, but how exactly does fuel (leaded or otherwise) get anywhere near the diaphragms?

Dave

[mad cyclist]

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DJT wrote:

mad cyclist wrote:

some of the diaghram material perishes in unleaded i have been told, this may be an old wives tail but it was relayed to me by a batchelor!!

I too have heard this. I amy be misisng something, but how exactly does fuel (leaded or otherwise) get anywhere near the diaphragms?

Dave

I'm no chemist ,apart from making nettle tea, but i think its to do with the vapours man, rubber dont like a petroly enviroment. Bit like Gordon brown!!

[grahamb]

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It sounds silly but is your petrol level ok? When it was running, my short lived TR6 hated a lowish fuel level

[maverick]

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Hi,Barry,

Apologies for piggybacking your post, but I have excactly the same problem,started last week,I am going to check diaphrams today,but do I need to do a complete carb stripdown to look for detritus or can I access from above so to speak by removing air valve/needle,i think I have allen key to do this.

My car starts to miss under load especially under exelleration or seems to happen more when going uphill.

My fuel tank is 3/4 full,just fitted new under bonnet fuel filter and have no filter in boot.

Any help welcome,

Thanks Mark

[Bazstag]

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maverick wrote:

Hi,Barry,

Apologies for piggybacking your post, but I have excactly the same problem,started last week,I am going to check diaphrams today,but do I need to do a complete carb stripdown to look for detritus or can I access from above so to speak by removing air valve/needle,i think I have allen key to do this.

My car starts to miss under load especially under exelleration or seems to happen more when going uphill.

My fuel tank is 3/4 full,just fitted new under bonnet fuel filter and have no filter in boot.

Any help welcome,

Thanks Mark

Mark, have you looked to see if your tank breather pipe is blocked as this could produce a vacuum, found mine blocked a few weeks back but now as stated got probs with the carbs, i think:?. Never stripped a carb before so afraid cant help on that line but will take note and strip the carbs when i return from holiday in 2 weeks

Baz

Forgot to mention if it is possible crap in the carbs look at Russ's post on Fuel pump when he mentions about using carb cleaner in the fuel inlets, sorry have'nt learnt how to paste thread yet

[maverick]

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Thanks Baz,me not done a carb strip before either,I guess I was hoping other more experienced forum users may come to the rescue,and why I was enquiring about short cut ,ie entering carbs from obove in situ ,rather than removal and strip.

Thanks re breather (do you mean petrol tank breather?)and I will check.

Guess I am trying to formulate a list of easier to do's ,like diaphram/breather checks before I attempt carb strip.

Good luck with yours

Kind Regards Mark

[Bazstag]

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,maverick wrote:

Thanks Baz,me not done a carb strip before either,I guess I was hoping other more experienced forum users may come to the rescue,and why I was enquiring about short cut ,ie entering carbs from obove in situ ,rather than removal and strip.

Thanks re breather (do you mean petrol tank breather?)and I will check.

Guess I am trying to formulate a list of easier to do's ,like diaphram/breather checks before I attempt carb strip.

Good luck with yours

Kind Regards Mark

Yes Mark the petrol tank breather, easiest way of doing it is in the boot, the pipe goes to the top of the filler, mine has a filter on it, just unclip and see if you can blow thru it, not suck:shock:

[GDPR]

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Recently had a nice lump of t*rd in the inlet valve of the fuel pump - caused it to oscillate so rapidly (electronic SU type) that the pump went very quiet and only delivered fuel when it felt like it - oddly enough it didn't feel like it on hills or above 60:?

Unscrewed the valve with the pump in situ, removed said t*rd and then took precaution of another in-line filter between tank and pump........ back to a nice normal tick again....

Russ:dude: