Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Hey everyone.
My Hq Tonner with 253 on LPG and Unleaded is giving me greif again. It will run fine on petrol, starts easy etc.
On gas, one warm it runs good and smooth and will start easy. In the mornings i go out to start it on gas and it wont start, it cranks fine and splutters but wont start.
In the end I end up cranking it over for 5 secs. Leaving it for 30, try again for 5 secs, let it sit for 30 secs. I do this about 6 times and it will finally fire. Sometimes it wont even start at all. I then have to switch to fuel and it will start eventually. I have also tried diffrent methods of starting like diffrent pumps of the pedal, pedal flat down etc, to no avail.
This is such a bloody problem for me as it makes me late for school or whatever. Then when I leave to go home from school it does the same thing again. Bloody Embarrasing. Cant imagine what a hassle it will be when I start my apprenticeship next year...
What could be the problem. One mechanic mate said it may need new plugs and leads, but why does it ru nso good once warm?
Thanks for any help.
Matt
|
|
|
|
|
|
Rank: Veteran
Groups: Moderator, Registered, Veteran
Joined: 1/03/2005(UTC)
Posts: 14,740
Thanks: 1 times
Was thanked: 516 time(s) in 492 post(s)
|
My HZ used to be the same. It had an old Impco system, and a points dizzy converted to electronic. It was a pig to start and displayed the type of behaviour you describe. I did two things:
Threw the Impco converter and mixer away, and replaced with a N |
_______________________________________________________
If we all had the same (good) taste, who would buy all the Fords? |
|
|
|
|
|
Rank: Member
Groups: Registered
Joined: 11/03/2005(UTC)
Posts: 480
|
Matt,
My HZ is the same, it's a fact that if you run a points ignition system then the spark to fire a cold gas pulse is just not good enough to get it going on a cold morning. Make sure the converter is setup OK, ie not throwing a too rich mixture in |
202 and three on the tree, can't get more Aussie than that!! |
|
|
|
|
|
Rank: Veteran
Groups: Moderator, Registered, Veteran
Joined: 2/03/2005(UTC)
Posts: 3,135
Thanks: 1 times
Was thanked: 35 time(s) in 33 post(s)
|
I have a blue motor HEI system (dizzy, caps, rotor, coil, leads etc) listed in the FS section if you're interested.
The guys are right, gas needs a good healthy spark.
If you were to go to straight gas you can get better power by tweaking the timing |
Cheers,
Mick
_______________________________________________________________
Judge a successful man not on how he treats his peers, but on how he treats those less fortunate. |
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
My mate has a new generation setup from his HZ tonner I could probably nick. Mine is an impco setup...
It never used to do this that is what is getting me. It just all of a sudden started to do it?
I wish i knew how to tune it. Where are the screws
|
|
|
|
|
|
Rank: Member
Groups: Registered
Joined: 2/03/2005(UTC)
Posts: 417
|
Gas isnt it grate! If you have an impco system chances are that you have the alloy snorkel with the air filter on the end. As it is duel fuel there is a diaphram inside this air filter that needs to be switched from open to closed when you chane from gas |
"Such is life" |
|
|
|
|
|
Rank: Veteran
Groups: Moderator, Registered, Veteran
Joined: 2/03/2005(UTC)
Posts: 2,898
Was thanked: 2 time(s) in 2 post(s)
|
I don't know whether you can do it with a carby engine on gas but my EFI Falcon is setup to start with both petrol and gas pumping into the engine for a second or two. It starts easier on gas than it does on petrol alone.
Ashley at the Hospital Se |
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Sounds interesting Jim, might have to look into it for the HZ.
Peter
|
|
|
|
|
|
Rank: Guest
Groups: Guests
Joined: 2/09/2015(UTC)
Posts: 43,977
Was thanked: 5 time(s) in 5 post(s)
|
Are you hearing gas flow when you turn yr ignition on? On yr firewall theres probably a small vacuum switch. It should have a small vacuum line from the inlet manifold and one or two wires going to it. These cheap nasty switches fail all the time. They se
|
|
|
|
|
|
Forum Jump
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.
