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hey guys i have a 2008 Mazda BT-50 doing jus about 108xxx km, i bought it second hand from my uncle and i started having hard starts. i changed the battery, glow plugs, fuel filter and oil filter thinking they had problems. can anyone suggest something. could it be the engine seals or something around there ?

everything is a help. thanks

p.s. it also burning white smoke after hard start... smells like oil. hope nothing is too bad

is your coolant level dropping also ? if it is Get the cylinder head checked,

Check that little mesh filter on the fuel intake under the 16mm bolt. Check glow plugs. Does it start eventually and run okay?

roti102 wrote:Check that little mesh filter on the fuel intake under the 16mm bolt. Check glow plugs. Does it start eventually and run okay?

yeah it starts up after a while and runs great. but i not seeing any mesh filter

16mm bolt that is very close to the fuel line going to the intake manifold. There is a fine mesh filter in there that is the last line of defense for the fuel injectors. Remove the bolt and ise a pencil rubber to remove the filter mesh.

domo check your oil level and that mesh strainer mentioned above, could be the fuel pump. why you doh just go by justin boy?

i ran an indicator light to my glow plugs so i know how long they stay on...there is a unit under the intake anifold that controls the lenght of tie the plugs are glowing.....the indi light on the dash is jsut a safe to start indicator that shuts off after a few secodns....at times this goes bad....mech mines from the forum thougth me alot over the phone this guy is a realy good mech......try tripple heating with the ignition key to see if this eases up depress the pedal a few times before start up...

thanks guys il check the mesh filter later and il try the tripple heating method aswell.

Here are a few signs of a cracked engine head. These are the symptoms I experienced when my engine head cracked. I replaced the entire engine head myself and now it runs normal.
•Coolant level dropping in your reservoir bottle over a week time.
•Coughing out a black sooth from the exhaust onto your floor. (This was the coolant that got into your cylinder(s) through the crack and is now being pushing through the exhaust. The sooth is from the coolant mixing with the stuff in your exhaust and coming out the end).
•Lots of white smoke being thrown out your exhaust when the engine is cold started. Note: don't rely completely on this white smoke as blown glow plugs, bad fuel injectors, dirty fuel filter(s) and dirty air filter can also cause this.
•Van stuttering on cold start.
•When there is a really big crack, it can sometimes cause the engine to stall and will take a good 5+ seconds of tumbling to start. (Stalled on me twice while it was idling even though the engine was running at normal operating temperature).

Paullct wrote:domo check your oil level and that mesh strainer mentioned above, could be the fuel pump. why you doh just go by justin boy?

Who is Justin? A diesel mechanic? I too would like to know a good diesel mechanic.

^^ Mech Mines on the forum is a very knowledgeable diesel mechanic IMHO and I would highly recommend him to anyone, ESPECIALLY the mazda and ford owners.

Yep mech mines a diesel god

Yep mech mines a diesel god

i put a brand new glow plugs, brand new fuel filter and cleaned out the k&n filter also brand new oil and oil filter, also when i put in gas i put a diesel treatment, so now its down to the fuel injectors.i will go get them checked because the only signs i get are....
1. white smoke on hard start
2. sometimes get a stuttering

il go by justin and see what he says.

i getting that same thing boy. will pass by him later. hoping its not a cracked head /:

Any updates

See that K&N? Put eet in a bag and toss eeet! Scientifically proven to let dirt into your engine.

doh firetruck meh up .... i would rel coas....... right now i am booked to clean my injectors out moro. if that doesnt work . im gona cry cus thats alot of money to waste

roti102 wrote:See that K&N? Put eet in a bag and toss eeet! Scientifically proven to let dirt into your engine.

Doh need no science.

More air flow =More Dust

Has to be not me and that sheet!

K&N is not meant to be used in dusty conditions. clogged injectors can very well be due to the K&N over time

Any updTES

didnt get time to go clean out injectors, would have to wait to till nex week. will keep yall posted

UPDATE !!!! cleaned out injectors and we still hard starting some mornings, but when it does start up, she balancing off nice and running perfect.

Check ya plugs and see if they wet

Put back a normal air filter i had put a kn on a hilux and ended up with a world of issues ....

il go get a mazda original later and see if that cleans it up a bit

NEWEST UPDATE !!! soo bought a brand new filter, clean injectors, changed oil and oil filter, change fuel pump, changed spark plugs stil hard starting. but yesterday after i was changing the air filter, i notice the tubing was very slack and i was able to pull it apart with my hands . this is where the line meets the filter box. could that be causing a problem?

Cracked Head ...

Did you check too see how long the gplugs are staying activated, if it cuts out to quickly, you will get the hard starting

Did you check too see how long the gplugs are staying activated, if it cuts out to quickly, you will get the hard starting