lack of power

Post by **matty o** » 28 Sep 2007, 18:31

Help have a problem with a 1.9dg
Starts ok
Runs ok until put under heavy load i.e. hills then losses power (feels like missing)

Work done so far
Fuel filter
spark plugs
HT leads
cap and rooter arm
Timing
Vacuum pipes replaced
Carb striped and cleaned
Wd40 sprayed around to se if change in tic over
Compression test (a bit low but all the same at 9.5bar)

I am now at aloss so before I set fire to it any idaes

Post by **kevtherev** » 28 Sep 2007, 18:40

So your in top gear and you come to a hill ( more than 5%?) and it starts to slow.....Yes?

Post by **edoh** » 28 Sep 2007, 18:42

clutch ok?
where exhaust meets side of engine - no leakage?
assuming idle/fuel mix ok?

Post by **RedSquirrel** » 28 Sep 2007, 18:56

Rubber gaiter between filler cap and fuel tank neck perished?

Post by **edoh** » 28 Sep 2007, 20:07

you seem to have covered most of the ground - haynes says -
incorrect ign timing - fuel filter choked - fuel pump faulty - uneven / low cylinder compressions - worn/faulty spark plugs - vacuum leak at inlet manifold - brakes binding - clutch slipping -
rudy god luck!

Post by **matty o** » 28 Sep 2007, 20:19

Thanks for your ideas keep them coming
on hills that i could get up in 3rd at 50mph with ease i am now struggling at 40mph with distinct hesitation

have found a leak where the exhaust joins the silencer but would this realy make this kind of difference

have checked for water in fuel none found so a think fill pipe is ok

the only thing i have not changed is the fuel pump

Post by **toomanytoys** » 28 Sep 2007, 20:24

Vac advance working?

The diaphragm on the second choke actually working...
Sure all the jets are clear?

coil breaking down...

Post by **kevtherev** » 28 Sep 2007, 23:16

brake vacuum hose ok

as toomany toys has pointed out
only until it's all done can you say ...fuggin slug of a van!

or it's normal and you are hoping for a miracle

Post by **Ian Hulley** » 28 Sep 2007, 23:29

Air filter ? worth a try
Plugs correctly gapped ? Ditto
Coil ? (The early symptoms of breakdown occur under load)
Breather hose and tower clear and clean ? (the hose collapses inwards and gives a restricted feeling as if the engine's choking ... sorry, best I can describe it as

)

How long have you had the van ? If you've just swapped from a Diablo the performance may seem a tad ... well, missing

Hope this helps, Ian.

Post by **matty o** » 29 Sep 2007, 07:42

thanks keep it coming
tryed a new coil
cleaned breather tower and pipe work
had new air filter 3 mounths ago
diaphragm on the second choke sucked on pipe looks like it works

starting to think its engine

Post by **toomanytoys** » 29 Sep 2007, 08:43

Doubtfull engine is at fault.. you have missed something... if its starting anf running at low speed the my guess its still the carb.. jets blocked, gasket leaking, one of the diaphragms leaking..

Did you remove the jets? did you put them back inthe right place?

Post by **matty o** » 29 Sep 2007, 12:31

i think i may have found it
the vacun unit on the distributor
i can suck on it and nouthing moves
Would this course the proplems and does anyone know where i can get spares
thanks

Post by **toomanytoys** » 29 Sep 2007, 14:00

I said to check that.. It wont help, but I dont think its all of your problem..

can you just keep sucking or deos it hold vacuum?
sounds like it split.. JK and GSF used to do them.. But I have made a beetle one fit IIRC the "3hole" type can be made to fit..

Post by **matty o** » 29 Sep 2007, 15:49

I can just keep sucking and the pin does not move

Post by **toomanytoys** » 29 Sep 2007, 16:07

Well the air leak wont be helping.. and you need the advance for part throttle pwer and economy...