Car lost power and strong vacuum smell
Why did my 96 Lexus lose some acceleration power and has a strong vacuum leak smell?

In 1996, the Lexus sports coupe added a few additional standard features and options. New to the SC 300 were auto-dimming electrochromic inside and outside rearview mirrors as standard equipment. Additional options included chrome wheels and a one-touch power moonroof. An important note: 1996 and 1997 were the last model years in which the celebrated manual transmission was available on the SC 300.
The sleek ergonomics and exterior design continued to highlight the classic sports car attributes of the SC. However, the SC offered more than a traditional sports car. This was a true touring coupe, which could seat four adults with considerable comfort. The only snag is storage space for long trips. The trunk is small and the back seats can not fold down. Issues of spaciousness still take a backseat to performance. The same 3.0 liter inline six returns, making 225 horsepower and propelling the SC from 0 to 60 in 6.8 seconds.
Today, the average SC driver is hovering between 125 and 150 thousand miles. Many of them claim that is one of the most reliable sports coupe ever built, and many of the complaints that Mercedes and BWM drivers put forth are quite uncommon for the SC 300. Many drivers report that they are still running with original clutches, brake pads, and struts, despite challenging their cars on a daily basis.
Why did my 96 Lexus lose some acceleration power and has a strong vacuum leak smell?
Where do you buy a 150 a fuse for a Lexus sc400
Air Conditioning
Automatic climate control front air conditioning
Airbags
Dual front airbags
Audio System
Antenna Type: power · Premium Brand: Nakamichi Audio · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Shift knob trim: leather · Steering wheel trim: leather
Convenience Features
Memorized settings: driver seat · Multi-function remote: keyless entry · Steering wheel: power tilt and telescopic
Lights
Exterior entry lights: security approach lamps · Headlights: Auto on/off
Mirrors
Exterior mirrors: power · Inside rearview mirror: electrochromic
Roof
Moonroof: power
Seats
Front seat type: bucket · Heated: front seats · Upholstery: leather
Tires and Rims
Wheel type: aluminum alloy · Wheels: chrome
Windows
Front wipers: intermittent
Air Conditioning
Automatic climate control front air conditioning
Airbags
Dual front airbags
Audio System
Antenna Type: power · Premium Brand: Nakamichi Audio · AM/FM radio
Brakes
ABS: 4-wheel
Comfort Features
Shift knob trim: leather · Steering wheel trim: leather
Convenience Features
Dimming rearview mirror: auto-dimming · Memorized settings: driver seat · Multi-function remote: keyless entry · Steering wheel: power tilt and telescopic
Lights
Exterior entry lights: security approach lamps · Headlights: Auto on/off
Mirrors
Exterior mirrors: power
Roof
Moonroof: power
Seats
Front seat type: bucket · Upholstery: leather
Tires and Rims
Wheel type: aluminum alloy · Wheels: chrome
Windows
Front wipers: intermittent