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i drive a hz 308 wagon with t400. when driving home today on the highway i decided to "give it some". usually on the highway im doing about 90 - 100km sitting around 2500 revs. but while kicking it in the guts i got to about 3000 revs, the car got up around 110 or so - but out of no where there was a large lapse of power or flat spot. what have i stuffed, or is this common. car usually purrs, and after. cheers geoff
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Plugs and leads would be my guess.
Ignition items usualy break-down when "giving it some"
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i would replace points & condenser as well
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thanks, just had points and condenser replaced two weeks ago - but i have had the flat spot occur about 3 months ago aswell, so i will give the leads and plugs a go.
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It sounds like its running out of fuel. Does it pick up if you back off.
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yeah, when it lags i generally ease off, and it does pick up pretty much straight away. i did get a batch of crook fuel awhile back, put on a new fuel filter and cleaned out fuel pump. also find it can be a bit inconsistent when off the mark. sometimes
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It sounds like your fuel pump cannot keep up with your carby or your carby inlet filter is partly blocked and your pump squirter in the carby may have some muck in it too.
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Check the fuel filter if you have an inline one. Also if you have a quadrajet, they have a small filter on the fuel bowl inlet. Most people chuck em and fit an inline filter, but worth checking to see if there's one in there.
Also can try putting a fuel
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thanks for info. i have thought it was fuel related. was very bad this morning on the highway - so best i look closely at the carby and fuel line. cheers for all the info and suggestions - have ruled out electrical so lets hope its fuel. cheers geoff
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The carby inlet filter is fitted from std on Holleys/ Q-Jets/ Varijets and most jap carbys and others as well.It is often removed because of the misconception that it is restricting fuel flow but it stops a lot of crap from entering the carby at all and i
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speaking to my uncle, he has a very nice hx 308. rang him today to discuss my problem. and as you would guess, had exact same problem years ago. he did all the things mentioned but no luck, it wasnt until he was told to simply add a spacer 10 to 15 ml
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Yes Geoff, I have done this. The spacer that you require is a Bakelite one not a metal one. The one that I bought cost nearly $40 18 years ago. they do help with vapour lock quite a lot. |
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bakelite, thats what my uncle said. thanks for confirmation. hopefully, all the help provided by you guys will get to the root of this problem. thanks for all the suggestions. quite easily best holden infor site i have evere come across. cheers geoff
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Hi There Geoff, have read through the above posts and you mentioned that you have ruled out electrics. about 6 months ago I had an issue like this also on my SB chev in my Monaro, at around 4 grand it start to break down and stutter, thought it might be a
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The spacers are also known as "Phenolic" spacers, and are available reasonably cheaply from VPW in oz. Another handy trick is that there are available also Carburettor heat shields (got mine from USA). Is sheet metal that bolts under carb and sits betwe |
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Keep the shiny side up, and the greasy side down. |
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well dont i feel like a dick. follow up to my flat spot problem. it kept getting worse, and started to even stall every few minutes. eventually got so bad i could not start it again (tuesday arvo). got my mechanic to have a look - he could not find an
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