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Location:
tas
Registered:
June 2002
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 3S-F engine no power. Help please.
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Tue, 31 August 2004 11:10
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My mum is away and i thought i would work on her camry (89 apollo) as it's been neglected.
The car lacks power, put it in 'L' and floor it and it takes forever to get above 4000rpm. Even when in nuetral it seems slow to rev.
I did the timing wich was retarded abit, and replaced the air filter as it was caked right up with dust. The car still lacks power. I know these engines are gutless, but it use to have alot more go then this, it's as if it's running on 2 cylinders. (i checked all cylinders are firing wich they are)
I checked the carburettor and noticed when you give it throttle, the butterfly thing (sorry dunno what it's actually called) doesn't open up at all, i'm new to carburettors, i am used to EFI cars. Maybe the butterfly only opens up when under load and kicks in (is it a secondary inlet?). The choke is fully open. Maybe i am looking in the wrong area?
any suggestions would be great! the engine in question is a 3S-F 16valve narrow head pov carb model camry.
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: 3S-F engine no power. Help please.
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Tue, 31 August 2004 11:13
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i thought this was completely normal for a 3sfe 
I reckon you should change the plugs and inspect the old ones.
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Location:
tas
Registered:
June 2002
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Re: 3S-F engine no power. Help please.
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Tue, 31 August 2004 12:01
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HAHA! yes they are gutless engines, but my mums 3S-F feels like it's putting out around 2-3 FWKW 
checked plugs and re-gapped them, they aren't all that old either.
no change with engine power :(-
maybe the cat converter is blocked? maybe the car over heated? the thermo switch wasn't working so replaced that. i dunno where else to look?
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I supported Toymods
Location:
Perth, WA
Registered:
May 2003
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Re: 3S-F engine no power. Help please.
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Tue, 31 August 2004 12:35
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Maybe the motor is just tired? do a compression test
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Location:
tas
Registered:
June 2002
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Re: 3S-F engine no power. Help please.
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Tue, 31 August 2004 12:42
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but it's a toyota!
haha well that could be it tho, no compression even tho It burns no
oil. Will dig up a compression guage tommorow and see what readings i get. thanx
I have a feeling it's to do with the carburettor, but like i said i have no expierience with carburettors.
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Location:
tas
Registered:
June 2002
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: 3S-F engine no power. Help please.
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Wed, 01 September 2004 13:52
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how'd you "I did the timing"??
set it for performance, and not by some factory marks that are probably off.
put a little "tell tale" on that vacuum operated secondary throttle plate linkage to see if & how far it opens. a little piece of wire, twist tie, something/anything that will get moved without too much pressure, and show that it is operating when driven.
compression check is always the FIRST thing to do.
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Location:
tas
Registered:
June 2002
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Re: 3S-F engine no power. Help please.
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Wed, 01 September 2004 14:35
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HA! glad you asked about how i did the timing, coz it turned out to be a hell of a big job!
i warmed the car up, had the tachometer and timing light hooked up, blocked off the vacuum advance to the distobutor and checked the timing, it was about 5 degress retarted, so i adjusted it to stock 5 degrees BTDC. After that it seemed like the engine was slightly pinging. SO! i rechecked the timing, it was spot on! so i figured the timing belt might have slipped a tooth or more. Took a whole day removing the front timing cover off and to check that the cam gear and crank pulley were in the correct positions. Turns out they were! and after i put it all back together and started the car again, that pinging wan't there.
so set it for performance? how do i do that? more advance?
I'll devise a way to do what you said with the secondary throttle linkage, thanks for the tip!
And like i said before i need to get a new compression tester as my current one has cracked rubber where it goes into the spark plug hole. When i turn the engine by the crankpully it feels like it has alot of compression still, and also uses no oil. But that isn't a gaurantee that my compression is good, more a good sign if anything.
thanx for your suggestions, i'll get back to you with results.
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Location:
tallahassee FL usOFa
Registered:
May 2002
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Re: 3S-F engine no power. Help please.
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Wed, 01 September 2004 18:17
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sorry, i meant to say "set it by performance", or "set it for the best performance", with whatever octane you want to use,
so that it only pings when abused
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Location:
tas
Registered:
June 2002
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Re: 3S-F engine no power. Help please.
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Thu, 02 September 2004 04:34
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well even if i do set it for performance i don't think it will be noticable, the power is bieng lost somewhere else.
But i should do that with my supra, pity PULP varies in quality so much! here in tas i can't even get 98ron. 96 is about the best i have found. At my local gas servo, the guy there reckons his PULP is 100ron...BAHAHA stupid dickhead.
But back to the subject, i've rigged up a bit of wire to the secondary linkage on the carb to see if it opens, but it's not as easy as it sounds! i might need to think of another way to do it.
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