further to my previous thread. car is good on flat but come to a hill and it just wont go. coming up the se freeway coming out of adelaide she just wont pull lucky to do 80klm. its
had new plugs, fuel filter, gearbox flush and refill. now i'm starting to think its either timing or fuel pump. timing belt has been changed at sometime so one mite think it could be a tooth out. could anybody help please

tr1

Could be either one since you have done the others. Do what ever you think is easier rip off timming cover and check. See if you can get a fuel pressure guage fitted to check fuel pressure as well. All else fails compression test engine may be tired but i doubt it.

It can't be the timing belt, and if the fuel pump is struggling then you're engine will end up spluttering and conking out. Oh and fuel pump doesn't just go haywire as soon as it hits a hill. I assume you've tested it with a full tank of petrol anyway.

How are the condition of the fuel injectors? Tried getting a compression test done?

yes that is my next job tomorrow. also getting a new rear muffler fitted as the one on the car now is capput. mite check the catalytc converter and see if thats blocked.

tr1

I had this with my MX5 - engine struggles under load, gets worse, looses power. Could also be some backfiring.

Change the HT leads - I'll be 90% that's the call.


Cheers - Mike

well had the rear muffler changed and would you believe it the cat converter as well. converter was blocked and also only about 1 1/2in to 2in inlet and outlet which was to small.goes heaps better came up se freeway in adelaide 100klm+. still suspisious about timing belt but having all belts and waterpump replaced thursday so will know then.
exhaust was done by EXHAUST DYNAMICS OAKLANDS RD , SOMERTON PARK,PH82945565 IN SA

tr1

Dont suppose you checked the air filter did ya?

If its filthy it aint gunna breathe///:)

clean K&N air filter

car heaps better now , gets up and go's now fuel economy looks to be better.

tr1

just incase it starts happening again have u thought about the sender unit in ur gas tank. it might be faulty and telling the computer theres no fuel when there is . anyways just food for thought

new 2.5in system installed. just had timing belt etc replaced found cam belt out 1 tooth on rear cam. fixed much much better now. mechanic still thinks it could be better said to get gearbox checked.