[Philip-Crown]

I own a Toyota Crown MS132 1991 with a 5M carbeurated engine.

In the morning during a cold start the car starts very quickly

Once it warms up and I turn it off, it turns it back on quickly if done within 5 minutes

But if I leave the car for 30 minutes after a trip and try to turn back on it takes almost 6 seconds to turn back on

I changed the spark plugs but still no difference

Any help would be appreciated

Also, the fuel filter is a couple of months old.

 

[TrailDust]

Is there a smell of fuel when you try to start it when it's warm?

 

[Philip-Crown]

Is there a smell of fuel when you try to start it when it's warm?

I think I smell a bit of unburned fuel yes

 

[TrailDust]

If fuel is getting pumped through the system then I'd suspect the carburetor is getting heat soaked. You might try using something like a phenolic carb spacer to block the carb from engine heat and see if that cures the problem. Only thing is I don't know how the carb sits in your model of Toyota so you'll have to use your better judgment when it comes to shielding it from engine heat. Anyway, heat soak is what I'm thinking the issue is.

 

[Philip-Crown]

If fuel is getting pumped through the system then I'd suspect the carburetor is getting heat soaked. You might try using something like a phenolic carb spacer to block the carb from engine heat and see if that cures the problem. Only thing is I don't know how the carb sits in your model of Toyota so you'll have to use your better judgment when it comes to shielding it from engine heat. Anyway, heat soak is what I'm thinking the issue is.

Can this be a DIY job?
and what parts would I need to buy

 

[Xenos]

Good info TrailDust. I would just add to consider the possibility of the electric choke having trouble. In fact if the carb has never been rebuilt since 1991 it might be a good idea to just get a rebuild kit.

 

[TrailDust]

Can this be a DIY job?
and what parts would I need to buy

Yes, it's a DIY job. There's web sites that sell phenolic spacers, etc., and a Google search should turn up a number of them. With luck they'll have a part to fit your Crown, although I'd call customer service to make sure they have a part that will either fit directly or can be adapted by you. :thumbsup:

Good info TrailDust. I would just add to consider the possibility of the electric choke having trouble. In fact if the carb has never been rebuilt since 1991 it might be a good idea to just get a rebuild kit.

Good suggestion. This type of issue isn't guaranteed to be fixed by any one thing, and Xenos's suggestion makes sense too.

 

[Philip-Crown]

Yes, it's a DIY job. There's web sites that sell phenolic spacers, etc., and a Google search should turn up a number of them. With luck they'll have a part to fit your Crown, although I'd call customer service to make sure they have a part that will either fit directly or can be adapted by you. :thumbsup:




Good suggestion. This type of issue isn't guaranteed to be fixed by any one thing, and Xenos's suggestion makes sense too.

I live in the Middle East and I cant get my hands on an aftermarket spacer

I can try and look for a Toyota OEM spacer

Will it work fine?

Thanks for your help

 

[TrailDust]

I live in the Middle East and I cant get my hands on an aftermarket spacer

I can try and look for a Toyota OEM spacer

Will it work fine?

Thanks for your help

If Toyota makes one, I don't know regarding your model. As far as aftermarket parts are concerned, can't you order via the internet and have it shipped by mail? A spacer isn't a huge item, and shouldn't cost that much to ship.