Fuel Problem

[EHoulton]

I just changed my nova 1.4sr to a 1.6GTE engine. when the engine is cold, it will back fire for me from the air flow unit, when its warm, the first 4000revs its fine, then after 4000revs it wont give anymore power...
Im using a GSI fuel tank with the fuel pump in the tank. I had to change the fuel pump as it clogged for me as the guy from whom i bought it did not stick a fuel filter in it. (which is my fault coz i dident check it)
But now the fuel pump is new, with the filter.
Does anyone have some ideas of what could be the prob?
Edward. :?:

[brian]

can you change the fuel pump relay with someone to see if its the problem?

[Snowface]

have you got uprated fuel lines?

the fuel pump needs to operate at around 3 bar i think, the sr fuel pump is only about 0.6 bar. Check u got a GSI one. Are u still using carb's (T40's might need adjusting) or are u injection?

[EHoulton]

i changed the fuel lines, i did nylon fuel lines which can take upto 110psi.
yes infact the fuel pump is suppost to push out around 3bar
i also noticed that the fuel pump relay gets quite hot after usage. dont know if its meant to be like that. i will try and get another relay to check it out.
Is there an instrument that can be attached to the system for the GTE?
coz i know that the are certain engines that have this plug for diagnostics, but i can't see it on the GTE..
Edward

[EHoulton]

I am using the original GTE EFI system.. the pump is suppost to be a GSI one. the sr engine's pump was stuck to the engine itself, like the 1.2S engine if you know what i mean.
Edward

[Dicko]

are the spark plug leads on the right plugs? iv had a similar prob and had 2 the wrong way. when i reved it it backfired and was very low on power.

as its the gte i cannot think of anything else really as its a VERY simple system. i think the leads are in a different order than on the sr. so check those, then maybe try chaging the timing a little.

can you get another distributor to try? it might be that also

[EHoulton]

i changed the whole engine system so that couldent have been wrong. the engine works absolutely fine on idle and low revs, so plug problem can't be it.
when i'll be driving, it feels as though the engine will be trying to give power on high revs, but just can't. that's why im pointing on fuel supply.

my major concer is, if the pump and filter are new, and maybe the tank is not 100% clean, will it manage to clogg the fuel pump? are these pumps so delicate?
Edward

[Aragorn]

wait

the GTE/GSI have external pumps

the only novas with intank pumps were the 1.2i and 1.4i and the pumps were only rated at 0.76 bar

ive heard folk say the 1.2/1.4i pump should be fine for the 1.6 but maybe this is the problem?

[EHoulton]

are you sure about this?
coz i bought a tank which has the fuel pump in it, and the local distributor for vaxuhall's told me its a GSi tank.
i thought that the gte had an external pump but the gsi had an internal one. the fuel pump is a bosch one.
Edward

[Snowface]

aragorn is right i think. Only the SPi's have a pump in the tank. u need to get an external one that can deliver more fuel.

[EHoulton]

i will check about this... it could be that he gave me a tank for the nova with a pump of the 1.6 16v.. coz if im not mistaken, they were internal pumps... what external pumps do you recomend? bosch?
Edward

[Dicko]

ahh ye that shud work fine

what they have done is given you a nova spi tank but a corsa mpi intank pump which will work fine. just make sure it IS an MPI pump from corsa.

uv said its a GTE engine, but are you sure it is, not a GSI?

some GSI's have a crank position sensor and if this is fualty or not conected it will cutout at 4k rpm and refuse to go faster.

[EHoulton]

the engine i have on it is a E16SE and as far as i know it is a GTE not a GSi engine... but dont really know the difference coz to me they look very similar.
how could i check that the pump is an MPI? has it got a part number that i could check with?
With regards to a crank position sensor, dont really know what that is, but as far as i know, the engine does not seem to have.

[Aragorn]

E16se is the bit we needed to know

thats the GTE/early GSi engine

the C16SE was fitted to 1993 GSi's and had the aforementioned cranksensor

yours doesnt

[EHoulton]

im just wondering why when i had changed the fuel pump, the first week it worked fine, and gave power till the red line, then suddenly, it just dident give anymore power over 4000revs..
it seems like a fuel prob..
its just that now, the vauxhall dealer wont give me back my money if its the pump that has gone wrong. and if it is it, i need to see what the defect is, im thinking that it can be the tank is not clean. but still, i dont think the fuel pump can get effected so much. no tank is 100% clean after all.
is it possible fitting an external pump with the same fuel tank?
Edward

[brian]

did you change the relay yet, its a simple thing but ive seen them fuck up on many occasions.

[EHoulton]

i still need to change it. thing is, to buy a new one, i need to order it and that will take 3-5weeks..so this is a fcuk up....but i will try and obtain one..hopefully..
Edward